1st Indoor Grow - 3x3 - advice appreciated.

Greetings All : ) I have been lurking around the forums for some years now, i did however change my nickname, i previously did a DIY stealth speaker which i didnt even end up using properly, i think i just knew that i was going to smoke what ever came out of there within a week. I have been so keen to get this grow going & im almost there & have attached some pictures !

Setup Consists of :

1 x DIY Aluminium tent i built from scratch.
1 x Super Sun 2
1 x 250W Magnetic Ballast with MH Bulb ( Veg )
1 x 600W Electronic Ballast with HPS Bulb ( Flowering )
1 x 6" Carbon scrubber 20" Long
1 x 6" Inline fan with 5 speed Fan controller ( 315 CFM )
1 x Weekly Timer
1 x Digital Thermometer
1 x 6" Wide , 120" Long Ducting.
1 x Custom Organic Mix with teas

Summary :

Im going to be pulling air from the carbon filter through the reflector and exhausting into the room, for the intake
i was thinking of running ducting from the back of the tent and letting it sit right next to my window for fresh air, would one 6" ducting that is going to be about 5-6 foot long be enough to let fresh air in ? I was thinking of putting a booster fan for this situation.

Any help will be appreciated. Thank You !

SouthernSoil* said:

Greetings All : ) I have been lurking around the forums for some years now, i did however change my nickname, i previously did a DIY stealth speaker which i didnt even end up using properly, i think i just knew that i was going to smoke what ever came out of there within a week. I have been so keen to get this grow going & im almost there & have attached some pictures !

Setup Consists of :

1 x DIY Aluminium tent i built from scratch.
1 x Super Sun 2
1 x 250W Magnetic Ballast with MH Bulb ( Veg )
1 x 600W Electronic Ballast with HPS Bulb ( Flowering )
1 x 6" Carbon scrubber 20" Long
1 x 6" Inline fan with 5 speed Fan controller ( 315 CFM )
1 x Weekly Timer
1 x Digital Thermometer
1 x 6" Wide , 120" Long Ducting.
1 x Custom Organic Mix with teas

Summary :

Im going to be pulling air from the carbon filter through the reflector and exhausting into the room, for the intake
i was thinking of running ducting from the back of the tent and letting it sit right next to my window for fresh air, would one 6" ducting that is going to be about 5-6 foot long be enough to let fresh air in ? I was thinking of putting a booster fan for this situation.

Any help will be appreciated. Thank You !

Click to expand...

Greetings: SouthernSoil
Your tent looks good. I would think that the 6” fan moving the air at 315 CFM would produce enough suction to pull and equal amount of air in. Have you tried turning on the light for and hour or so with the fan going to see how much heat builds up in the tent and the room? The only problem I would see putting in a in line booster fan is it would have to be close to your first fans CFM rating to keep from producing to much drag on the first fan trying to pull air through the second in line fan.

Thank you for your reply denarter, i think adding the booster fan is also going to be a waste bro, i have tried the 250w MH without the fan but im going to connect the fan up to it and test it out for a bit, then ill do the 600w aswell, the only thing is i dont want to cut holes in the cabinet because its custom and has no holes currently so i want to place them intelligently. if you check the picture below you'll see where im coming from, its an exact copy of my setup, i could add a Real life picture but currently there's a whole load of shit blocking the proper view.

Here is the Two Setup pics i thought of bro.


I wanted to make a ( Setup 3 ) which would be both intake and exhaust on the window, well exhaust on the top top window and intake from the most bottom point of the window although i will have to implement them into the boxes as seen in ( Setup 1 ) only thing i fear is having the intake sucking back the hot air, lol that will be a pretty retarded setup if that happened, wish i knew HVAC OR just inplant my brain with all the info in the world ffs : /

Appreciate the help bro !

SouthernSoil* said:

Thank you for your reply denarter, i think adding the booster fan is also going to be a waste bro, i have tried the 250w MH without the fan but im going to connect the fan up to it and test it out for a bit, then ill do the 600w aswell, the only thing is i dont want to cut holes in the cabinet because its custom and has no holes currently so i want to place them intelligently. if you check the picture below you'll see where im coming from, its an exact copy of my setup, i could add a Real life picture but currently there's a whole load of shit blocking the proper view.

Here is the Two Setup pics i thought of bro.

I wanted to make a ( Setup 3 ) which would be both intake and exhaust on the window, well exhaust on the top top window and intake from the most bottom point of the window although i will have to implement them into the boxes as seen in ( Setup 1 ) only thing i fear is having the intake sucking back the hot air, lol that will be a pretty retarded setup if that happened, wish i knew HVAC OR just inplant my brain with all the info in the world ffs : /

Appreciate the help bro !

Click to expand...

Greetings: SouthernSoil*
Your tent looks good and I would think setup 3 would work best. Hot air raises cold air sinks so as long as your exhaust is above your intake there shouldn’t be a problem plus once outside it should start mixing with the outside air and any type breeze to cary off heat. From your diagrams if you put the intake air outlet near the bottom of your room you should get a good distribution of fresh air and CO2 across your plants leaves just insure that if the intake air is flowing straight onto your plant that it is not too cold. I have found cold air can be as damaging as hot air. Yeah it would be nice to be able to put your hand on the outside of a book and know everything written inside of it. Good luck with your setup hopefully you wont have any glitches.

denarfer said:

Greetings: SouthernSoil*
Your tent looks good and I would think setup 3 would work best. Hot air raises cold air sinks so as long as your exhaust is above your intake there shouldn’t be a problem plus once outside it should start mixing with the outside air and any type breeze to cary off heat. From your diagrams if you put the intake air outlet near the bottom of your room you should get a good distribution of fresh air and CO2 across your plants leaves just insure that if the intake air is flowing straight onto your plant that it is not too cold. I have found cold air can be as damaging as hot air. Yeah it would be nice to be able to put your hand on the outside of a book and know everything written inside of it. Good luck with your setup hopefully you wont have any glitches.

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Sweet ! Thanks man, yeah im all sorted on the exhaust, im just wondering about the intake cause it can get pretty cold in the mornings here maybe 10-20 F so like you said, dont want to be sucking in air thats too cold, i can just run intakes so it can take in the room temp possibly ? Ill be breathing and playing plant music so i rate it can do good ? otherwise i can setup a small intake fan from the window, mmm tricky, cause its going to start heating up in 2 - 3 months from now. Peace bro !

SouthernSoil* said:

Sweet ! Thanks man, yeah im all sorted on the exhaust, im just wondering about the intake cause it can get pretty cold in the mornings here maybe 10-20 F so like you said, dont want to be sucking in air thats too cold, i can just run intakes so it can take in the room temp possibly ? Ill be breathing and playing plant music so i rate it can do good ? otherwise i can setup a small intake fan from the window, mmm tricky, cause its going to start heating up in 2 - 3 months from now. Peace bro !

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Hey SouthernSoul
If you have a home depot or similar store you can buy and put in a 6” tee with 2 dampers so you could shut off or open up whichever airflow you want. If you take room air off the floor it is about 5 to 12 degrees colder than the air at body height. By putting in the dampers you should be able to modulate the room air temp fairly easily by using a mix of inside and outside air. I did a quick check at the home depot web site here is a list of what you could use. (2) ea. 6 in. Damper, Model #D-6, Internet #100396929, Store SKU #149357

(1) ea. 6 in. x 6 in. x 6 in. 26 Gauge Tee, Model #26T6X6X6

Internet #100119548, Store SO SKU # 755578. Just use aluminum tape around the joints. If you need more clarification just ask

denarfer said:

Hey SouthernSoul
If you have a home depot or similar store you can buy and put in a 6” tee with 2 dampers so you could shut off or open up whichever airflow you want. If you take room air off the floor it is about 5 to 12 degrees colder than the air at body height. By putting in the dampers you should be able to modulate the room air temp fairly easily by using a mix of inside and outside air. I did a quick check at the home depot web site here is a list of what you could use. (2) ea. 6 in. Damper, Model #D-6, Internet #100396929, Store SKU #149357

(1) ea. 6 in. x 6 in. x 6 in. 26 Gauge Tee, Model #26T6X6X6

Internet #100119548, Store SO SKU # 755578. Just use aluminum tape around the joints. If you need more clarification just ask

Click to expand...

Ok sweet bro , cause the thing is i can put the exhaust pretty close to the top window but i cant really put the intake close to the bottom window cause of people seeing it etc i am on the 2nd story of the house so ill have to test and see the visibility from outside though, would you think it would be okay to place the intake a lil further away from the window ? Cause like i said im going to disguise it as a hole in the side of the box so you wont see the side when u enter the room, although as you were saying, it doesnt really matter if the air is a lil mixed ? I see what you mean with the T gauge, i could probably get my hands on one of them.

What i was thinking though on the other hand i might need to have a bigger intake gap, cause the 1 x 6" with a filter might not be sufficient you think ?

Thanks for the help bro

SouthernSoil* said:

Ok sweet bro , cause the thing is i can put the exhaust pretty close to the top window but i cant really put the intake close to the bottom window cause of people seeing it etc i am on the 2nd story of the house so ill have to test and see the visibility from outside though, would you think it would be okay to place the intake a lil further away from the window ? Cause like i said im going to disguise it as a hole in the side of the box so you wont see the side when u enter the room, although as you were saying, it doesnt really matter if the air is a lil mixed ? I see what you mean with the T gauge, i could probably get my hands on one of them.

What i was thinking though on the other hand i might need to have a bigger intake gap, cause the 1 x 6" with a filter might not be sufficient you think ?

Thanks for the help bro

Click to expand...

Hey SouthernSoul*
I included one of your diagrams with some questions. By chance could you take pictures of between the window and tent and any exposed sides of the tent?

denarfer said:

Hey SouthernSoul*
I included one of your diagrams with some questions. By chance could you take pictures of between the window and tent and any exposed sides of the tent?

Click to expand...

Checked out your picture thank you bro, i modified a picture aswell according to what you asked, from the box to the window where i placed the extraction duct the side length there i mentioned 4" but its about 6" inch away from the box on the side, then from the actual back of the box towards the window its sitting at 12" away although that can be made closer, im going to be sitting the purple/white box closer to the window, sorry for the bad quality picture, the sunlight was basically shining right in and the cab is pitch black, i did draw corners to show where it is though.

I have turned on my fan on full speed, its not very loud pretty smooth running fan, i have a 5 speed controller with it that makes it a little more silent on level 3 with still quite a decent amount of air flow, i havent run the fan enclosed in the cabinet though, that might probably give a much more quieter sound though.

For the intakes i was considering two 4.7" intakes cause i already have them and they have filters attached, although im thinking the filter it has is a pretty thick material so i might just look at stocking/pantyhose or fine mesh to do the trick bro, for the exhaust i was thinking of keeping the fan in the cabinet then just running a pipe out through the side into the box then letting the duct sitting on the edge of the box blowing the air out into the top window i could reduce the length from 12" to about 6" with the box sitting closer, would you think i might get a bit of frost on the tips of the ducting bro ?

Peace : ) and much respect for the help man ! Hope you having a awesome weekend

SouthernSoil* said:

Checked out your picture thank you bro, i modified a picture aswell according to what you asked, from the box to the window where i placed the extraction duct the side length there i mentioned 4" but its about 6" inch away from the box on the side, then from the actual back of the box towards the window its sitting at 12" away although that can be made closer, im going to be sitting the purple/white box closer to the window, sorry for the bad quality picture, the sunlight was basically shining right in and the cab is pitch black, i did draw corners to show where it is though.

I have turned on my fan on full speed, its not very loud pretty smooth running fan, i have a 5 speed controller with it that makes it a little more silent on level 3 with still quite a decent amount of air flow, i havent run the fan enclosed in the cabinet though, that might probably give a much more quieter sound though.

For the intakes i was considering two 4.7" intakes cause i already have them and they have filters attached, although im thinking the filter it has is a pretty thick material so i might just look at stocking/pantyhose or fine mesh to do the trick bro, for the exhaust i was thinking of keeping the fan in the cabinet then just running a pipe out through the side into the box then letting the duct sitting on the edge of the box blowing the air out into the top window i could reduce the length from 12" to about 6" with the box sitting closer, would you think i might get a bit of frost on the tips of the ducting bro ?
Peace : ) and much respect for the help man ! Hope you having a awesome weekend

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Hey SouthernSoul*
I was thinking when you run a cloths dryer do you get any type of frost, condensation or a vapor cloud coming out around the outside of the vent if not then you probley don’t need to worry to much about it and if the exhaust air mixes in a different box before exiting then it will lose most of the heat. Pantyhose might be too thin if stretched you can also use a thin foam air filter from or for a window ac this is the ones I use on all four of my air intakes (Frost King Model # F1524 15 in. x 24 in. x 1/4 in. Foam Room A/C FPR 2 Air Filter) they are only 0.97 cents. What brand of fan do you have mine is really loud. From what I can see and read the right side of the tent has enough space to get between the curtains and the tent correct? And if you have a space of between 6” and 12” from the back of the tent to the wall with the window and a space of 3’ between the bottom of the window and the floor. There is plenty of room to fit everything within that space, with the intake well below the window ledge. Is the drawing close to what you want? If so and you want help with the setup just let me know. T.T.F.N.

denarfer said:

Hey SouthernSoul*
I was thinking when you run a cloths dryer do you get any type of frost, condensation or a vapor cloud coming out around the outside of the vent if not then you probley don’t need to worry to much about it and if the exhaust air mixes in a different box before exiting then it will lose most of the heat. Pantyhose might be too thin if stretched you can also use a thin foam air filter from or for a window ac this is the ones I use on all four of my air intakes (Frost King Model # F1524 15 in. x 24 in. x 1/4 in. Foam Room A/C FPR 2 Air Filter) they are only 0.97 cents. What brand of fan do you have mine is really loud. From what I can see and read the right side of the tent has enough space to get between the curtains and the tent correct? And if you have a space of between 6” and 12” from the back of the tent to the wall with the window and a space of 3’ between the bottom of the window and the floor. There is plenty of room to fit everything within that space, with the intake well below the window ledge. Is the drawing close to what you want? If so and you want help with the setup just let me know. T.T.F.N.

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Hey denarfer ! thanx for the reply again bud, we dont really run a clothes dryer as there's hardly any winter rainfall here but i doubt that would happen, there isnt heavy frost around here bro, ill take a look at a foam filter bro, that looks like it might do the trick and the air can move pretty freely through that ?

Fan im using is the 150mm ( 230 v ) version bro http://www.ox-fan.com/Uploads/Catalogue/703c90e17403564e_BV9LA.pdf

If you looking at the tent from the front bro there's no space at all on the right side and behind it is just curtain which is right up against the wall where the window is, i will post up another picture for you during the night with the lights on cause my cam cudnt get a good pic with all the sunlight shining in bro. try and get a better view of it, there is more than enough room i say bro, also just thinking of how to place everything is the tent with the least bends. Thank you for the help so far man ! Respect

Hey there bro, i took a much better picture for you to see, Peace !

SouthernSoil* said:

Checked out your picture thank you bro, i modified a picture aswell according to what you asked, from the box to the window where i placed the extraction duct the side length there i mentioned 4" but its about 6" inch away from the box on the side, then from the actual back of the box towards the window its sitting at 12" away although that can be made closer, im going to be sitting the purple/white box closer to the window, sorry for the bad quality picture, the sunlight was basically shining right in and the cab is pitch black, i did draw corners to show where it is though.

I have turned on my fan on full speed, its not very loud pretty smooth running fan, i have a 5 speed controller with it that makes it a little more silent on level 3 with still quite a decent amount of air flow, i havent run the fan enclosed in the cabinet though, that might probably give a much more quieter sound though.

For the intakes i was considering two 4.7" intakes cause i already have them and they have filters attached, although im thinking the filter it has is a pretty thick material so i might just look at stocking/pantyhose or fine mesh to do the trick bro, for the exhaust i was thinking of keeping the fan in the cabinet then just running a pipe out through the side into the box then letting the duct sitting on the edge of the box blowing the air out into the top window i could reduce the length from 12" to about 6" with the box sitting closer, would you think i might get a bit of frost on the tips of the ducting bro ?

Peace : ) and much respect for the help man ! Hope you having a awesome weekend

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Hey: SouthernSoul*
I looked at the new pictures and I don’t see where you got the measurements and your drawing is somewhat misleading but any way. I don’t see any room to put any venting on the back or right side. The boxes on the left side of the tent are they empty? You had mentioned using a box to run the exhaust air into before exiting through the window could you do the same thing for the intake? You cut out side panels of the boxes and put the intake in one and the exhaust in another That way it could set up against the window screen and not be noticeable from the ground under your window. That is about the best that I can come up with after seeing the new picture it looks like you have vary limited space. T.T.F.N.

Hey bro, sorry about my pic i drew, ill stick to taking pictures rather, there's no space on the right side at all, at the back theres a little space between the window sill 3ft above and about 6" wide, i can put ducting between the two curtains there at the back although yeah i was thinking of not running ducts for the intakes at all though., the bottom box with the purple isnt empty but i could make a plan, the top one is empty which im going to cut out for the exhaust, ive been busy stealthing up the tent, looking good so far but the work is intense, i was thinking with the bottom box that i should maybe attach a PC fan 90cfm 4.7", so that it blows air into the box then running a duct from that bottom box to the bottom of the tent but then ill need bigger ducting as i dont want to starve the fan of air.

All in all there's little space to work with but having this equipment lying around for +2years now has gotten on my tits, im stealthing it up not even knowing if it will be that necessary but always better to be safer than sorry.

One last thing bro, do you think it will be a bad idea to just run intakes from the bottom on 2 sides ? Do you think if i dont run the intake close to the window, ill be starving my plants of good air ? i mean with the way my windows are setup up there is some air that gets in here and especially when i turn on the ceiling fan.

Thanks for the help man, much respect bro !

SouthernSoil* said:

Hey bro, sorry about my pic i drew, ill stick to taking pictures rather, there's no space on the right side at all, at the back theres a little space between the window sill 3ft above and about 6" wide, i can put ducting between the two curtains there at the back although yeah i was thinking of not running ducts for the intakes at all though., the bottom box with the purple isnt empty but i could make a plan, the top one is empty which im going to cut out for the exhaust, ive been busy stealthing up the tent, looking good so far but the work is intense, i was thinking with the bottom box that i should maybe attach a PC fan 90cfm 4.7", so that it blows air into the box then running a duct from that bottom box to the bottom of the tent but then ill need bigger ducting as i dont want to starve the fan of air.

All in all there's little space to work with but having this equipment lying around for +2years now has gotten on my tits, im stealthing it up not even knowing if it will be that necessary but always better to be safer than sorry.

One last thing bro, do you think it will be a bad idea to just run intakes from the bottom on 2 sides ? Do you think if i dont run the intake close to the window, ill be starving my plants of good air ? i mean with the way my windows are setup up there is some air that gets in here and especially when i turn on the ceiling fan.
Thanks for the help man, much respect bro !

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Hey man remember air flows, it flows just like water flows so if you can imagine the air as water flowing into the window(s) and down if it is cool air so you can put the intakes where ever they fit and air can flow to them unobstructed. Can you go down below the window and look up to see if you can even see the boxes that are along the side the tent and if so how mushes of the box(s) can you see?

Check the drawing if you can either use what you have or get another empty box just so they will set similar to the drawing. If so you could actually cut a slot in the side of the box the same size as the duct that way you could slide the box in or out from the window for either the intake or exhaust also if a box is not empty you can still put the ducting through the box then put / stack stuff back inside the box. You could cut out the side of the box(s) facing the window and hot glue burlap to cover the hole facing outside. After you get the boxes where you want them just duct tape them to the side of the tent to make a good seal. If your room is 3’x 3’ x5’ that is 15 square feet and you fan moves 315 cfm that means at full speed it will turn over the air 21 times in one minute.

The 6” ducting / any opening of the same size is rated as being big enough to handle the right amount of airflow so all you need is a 6” hole or equivalent (6 each 1” holes) so you can cut out lettering on a box side to let air in or out. So if you open or when the windows are open there is no air movement coming into the window with out the ceiling fan on?

I use both 12v dc and 120v ac case fans the highest cfm for 12v dc fans is about 100 cfm, ac fan will move up to 240 cfm but those are expensive fans and most case fans the higher the cfm the louder they are. T.T.F.N.

denarfer said:

Hey man remember air flows, it flows just like water flows so if you can imagine the air as water flowing into the window(s) and down if it is cool air so you can put the intakes where ever they fit and air can flow to them unobstructed. Can you go down below the window and look up to see if you can even see the boxes that are along the side the tent and if so how mushes of the box(s) can you see?

Check the drawing if you can either use what you have or get another empty box just so they will set similar to the drawing. If so you could actually cut a slot in the side of the box the same size as the duct that way you could slide the box in or out from the window for either the intake or exhaust also if a box is not empty you can still put the ducting through the box then put / stack stuff back inside the box. You could cut out the side of the box(s) facing the window and hot glue burlap to cover the hole facing outside. After you get the boxes where you want them just duct tape them to the side of the tent to make a good seal. If your room is 3’x 3’ x5’ that is 15 square feet and you fan moves 315 cfm that means at full speed it will turn over the air 21 times in one minute.

The 6” ducting / any opening of the same size is rated as being big enough to handle the right amount of airflow so all you need is a 6” hole or equivalent (6 each 1” holes) so you can cut out lettering on a box side to let air in or out. So if you open or when the windows are open there is no air movement coming into the window with out the ceiling fan on?

I use both 12v dc and 120v ac case fans the highest cfm for 12v dc fans is about 100 cfm, ac fan will move up to 240 cfm but those are expensive fans and most case fans the higher the cfm the louder they are. T.T.F.N.

Click to expand...

Sweet bro, i get what you saying, i only have about 4 x 90 degree bends from the filter > hood > fan > exhaust thats as minimalist as i could keep it, there's space on the front side and left side for two intakes, or do you think i should keep it to one ? As for the box it can be seen but not much, i still need to take a good look at the visibility without looking awkward doing it , my curtain which is green has a another thinner white curtain behind it, just like a 2nd layer so im going to be using that to cover out most of the box.

Thank you for the picture man ! i make out what you saying there, so im going to punch the hole so its sitting at the back of the box then running duct in the box to the front and the same goes with the intake, perfect dude im going to make this as stealth as can be for now, as for the fan i have a speed controller which i have set on level 1 now and i have put the fan in a box, i have now layed it on the ground and put in clothes inside the box and over some of the duct and covered it up & i am happy with the decrease in sound and seeing as its sitting outside of the cabinet without proper insulation gives me hope, i have attached two of the pics of the box, im looking at getting some good sound proofing material to insulate the box, i was thinking of taking some of my ducting drilling holes into it and wrapping it up with some insulation and fitting it perfectly into that exhaust box of mine, im sleeping in the room so i cant have it too loud.

Sweet bro so if i run a duct from the bottom box to the bottom of the cab you think it wont put too much strain on the fan trying to suck from that long intake duct ?

When i open the window which is right next to that intake box i think it will do a good job even without the ceiling fan,

I have a 90 CFM 12vdc Fan bro, i was thinking that could work to help push fresh air in ? It also fits perfectly with my foam filter i added in the pic , oh and one last thing bro i added the furnace filter i could get at the hardware store, perfect ! and thinking of using it to wrap my carbon filter next time it needs carbon replacement.

peace & thank you for the help again, much respect !

SouthernSoil* said:

Sweet bro, i get what you saying, i only have about 4 x 90 degree bends from the filter > hood > fan > exhaust thats as minimalist as i could keep it, there's space on the front side and left side for two intakes, or do you think i should keep it to one ? As for the box it can be seen but not much, i still need to take a good look at the visibility without looking awkward doing it , my curtain which is green has a another thinner white curtain behind it, just like a 2nd layer so im going to be using that to cover out most of the box.Thank you for the picture man ! i make out what you saying there, so im going to punch the hole so its sitting at the back of the box then running duct in the box to the front and the same goes with the intake, perfect dude im going to make this as stealth as can be for now, as for the fan i have a speed controller which i have set on level 1 now and i have put the fan in a box, i have now layed it on the ground and put in clothes inside the box and over some of the duct and covered it up & i am happy with the decrease in sound and seeing as its sitting outside of the cabinet without proper insulation gives me hope, i have attached two of the pics of the box, im looking at getting some good sound proofing material to insulate the box, i was thinking of taking some of my ducting drilling holes into it and wrapping it up with some insulation and fitting it perfectly into that exhaust box of mine, im sleeping in the room so i cant have it too loud.
Sweet bro so if i run a duct from the bottom box to the bottom of the cab you think it wont put too much strain on the fan trying to suck from that long intake duct ?When i open the window which is right next to that intake box i think it will do a good job even without the ceiling fan,
I have a 90 CFM 12vdc Fan bro, i was thinking that could work to help push fresh air in ? It also fits perfectly with my foam filter i added in the pic , oh and one last thing bro i added the furnace filter i could get at the hardware store, perfect ! and thinking of using it to wrap my carbon filter next time it needs carbon replacement. peace & thank you for the help again, much respect !

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Hey SouthernSoul
A shear curtain behind a window screen in or with sunlight outside should cover what ever is behind it at least till it get dark outside. Be care full about impeding you exhaust by covering it. Air like water has to have some place to go in order to flow so if you block up or impede the flow going out it will impede the air coming in and be careful about putting the intake to close to the shear curtain with out a grill otherwise it might get sucked in. And the closer to the fan the better but you could put the intake just about anywhere in you room with out a problem.

The carbon you have now should last you a couple of years, humidity is what will determine the filters life span the higher the humidity the faster the pours in the carbon fill up with water instead of stink. For the most part I only use the exhaust fan and carbon filter during flowering when the plant is looking to get pollinated and being stinky to attract a pollinator. During veg I use my other two 4” duct booster fans they are cheaper and quieter to run than the 4” exhaust fan/ carbon filter I have. As for the 90cfm fan the more air you have coming in the better but you could also use it inside you tent if need be. One thing I have learned is try it before, if you are unsure about something working right experiment first it is often cheaper and quicker than having take something apart and redo it after putting together. T.T.F.N.

denarfer said:

Hey SouthernSoul
A shear curtain behind a window screen in or with sunlight outside should cover what ever is behind it at least till it get dark outside. Be care full about impeding you exhaust by covering it. Air like water has to have some place to go in order to flow so if you block up or impede the flow going out it will impede the air coming in and be careful about putting the intake to close to the shear curtain with out a grill otherwise it might get sucked in. And the closer to the fan the better but you could put the intake just about anywhere in you room with out a problem.

The carbon you have now should last you a couple of years, humidity is what will determine the filters life span the higher the humidity the faster the pours in the carbon fill up with water instead of stink. For the most part I only use the exhaust fan and carbon filter during flowering when the plant is looking to get pollinated and being stinky to attract a pollinator. During veg I use my other two 4” duct booster fans they are cheaper and quieter to run than the 4” exhaust fan/ carbon filter I have. As for the 90cfm fan the more air you have coming in the better but you could also use it inside you tent if need be. One thing I have learned is try it before, if you are unsure about something working right experiment first it is often cheaper and quicker than having take something apart and redo it after putting together. T.T.F.N.

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Thank you again man, i wont be impeding the exhaust bro i just meant ill use the curtain piece to cover out most of the box but leave a piece open for the exhaust, i was thinking of possibly drilling holes in my ducting thats going to be in the cardboard box then wrapping it with insulation like a DIY muffler, what you think bro ?

As for the box im going to be lining it inside with insulation and then also lining the duct closest to it with insulation.

Carbon should last me quite a while then bro, i dont have much humidity around here especially that its winter now.

Im also going to be using my carbon filter for flowering only bro, so i was thinking of just using that grease filter for the one port side of the air cooled hood.

As for the fan, im planning on running my 6" 315 cfm which has a 5 speed setting, so running it on 1 is pretty chilled i guess. Seeing as im only running my 250w for veg
do you possibly think running two 90cfm 12vdc fans could do the job ? then switching to my inline when i put in the 600w HPS.

Respect

SouthernSoil* said:

Thank you again man, i wont be impeding the exhaust bro i just meant ill use the curtain piece to cover out most of the box but leave a piece open for the exhaust, i was thinking of possibly drilling holes in my ducting thats going to be in the cardboard box then wrapping it with insulation like a DIY muffler, what you think bro ?

As for the box im going to be lining it inside with insulation and then also lining the duct closest to it with insulation.

Carbon should last me quite a while then bro, i dont have much humidity around here especially that its winter now.

Im also going to be using my carbon filter for flowering only bro, so i was thinking of just using that grease filter for the one port side of the air cooled hood.

As for the fan, im planning on running my 6" 315 cfm which has a 5 speed setting, so running it on 1 is pretty chilled i guess. Seeing as im only running my 250w for veg
do you possibly think running two 90cfm 12vdc fans could do the job ? then switching to my inline when i put in the 600w HPS.

Respect

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Hi SouthernSoul*
Yeah any thing that will block or defuse the sound waves will work I know that you can get sound proofing foam on line but you can get and use any type of foam or batting / wadding to do the same thing. If that grease filter is not to thick I would use it. The two 90cfm fans might work to move enough air but you would need to try it first put the light in the tent turn it on with the fans then check on it at the hottest part of the day if the temps inside are ok then your set if not you can plan around it. T.T.F.N.

denarfer said:

Hi SouthernSoul*
Yeah any thing that will block or defuse the sound waves will work I know that you can get sound proofing foam on line but you can get and use any type of foam or batting / wadding to do the same thing. If that grease filter is not to thick I would use it. The two 90cfm fans might work to move enough air but you would need to try it first put the light in the tent turn it on with the fans then check on it at the hottest part of the day if the temps inside are ok then your set if not you can plan around it. T.T.F.N.

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Thank you bro, ill do some more searching on whats good although i might just go with the woolly type insulation in the pic below, i cant really see how thick the filter is cause its pretty much folded in the bag although i do know that they use smaller squirrel cage fans to pull through them.

Like you said bro, try it first, so my next step is getting sound proofing material in the fan box & around the ducting and try it like that, if its a bit too loud ill start crafting up a silencer, im having 2nd thoughts on the two fans but thinking of setting one up at the intake of the air cooled hood so it blows onto the light then the other one at the exhaust, but im dealing with about 5 foot of ducting and those fans might just pack up i think.

Peace & Respect