Inline fan inside or outside of tent?

[Major Blazer]

I am, I saw that - so far I've not had an issue doing it this way in my 3x3 which saw 3 grows, my 4x4 which saw two, and this is the lil guys first go around; no smells yet.

 

[TreeFarmerCharlie]

I am, I saw that - so far I've not had an issue doing it this way in my 3x3 which saw 3 grows, my 4x4 which saw two, and this is the lil guys first go around; no smells yet.

It doesn't really do anything for the smell, it just helps prevent the really fine particles from clogging the filter prematurely.

 

[Major Blazer]

Honestly dude, I don't think it matters at all. If it does, I haven't seen it have any affect whatsoever.

 

[Renfro]

I

I’m having this problem right now. Plants are in flower and since I’m exhausting into the same small space my tent is in I can’t seem to get RH below ~80%. I open the tent up and water is running down the sides. I check daily for bud rot and I feel like it’s just a matter of time before I find it.

Yeah, thats too high for flower. Hopefully you have a strain with strong mold resistance or it is just a matter of time before botrytis or powdery mildew rear their ugly heads.

Remember that when adding a dehumidifier to the lung room, it will also increase the temperature.

Sorry forgot to put the picture up View attachment 4564161

Looks like the pH is off in the root zone. Thats typically what causes those stripey burn patterns.

 

[Nizza]

The filter needs to be inside the tent unless it's an inline filter. This is to provide the negative pressure / odor control.

A push / pull system with two fans is ideal. In this case the smaller fan is generally used for the intake so as to allow for the negative pressure. Make sure you are pulling cool air in the bottom and exhausting hot air out the top (carbon filter located up high).

Avoid pumping the hot air into the same space that you are grabbing the intake air from unless you have adequate air conditioning / dehumidification in that "lung" room.

I have always been the same way, cold from the bottom coming in, hot air from the top going out
What if we were to reverse this in a situation like using LEDS? would the extra heat being pulled downward through the canopy help with VPD?

I am planning on doing this with my chamber, It will also be nice because I gain a little space from the fan being underneath my drain table. This is more of an electrical hazard now that my fan is underneath my plants, but if done right I am hoping that the fan being underneath will help bring canopy temperatures to a better range. The climate where I live it is typically 68-72 3/4 of the year in my house, and during the summer it sits 70-85 during the day, 65-70 at night

any input on this would be great, I just got my cloudline fans and am working on setting those up too, if anybody has any info on how to set up the T models high/low humidity and temperature I would really appreciate that

 

[Renfro]

What if we were to reverse this in a situation like using LEDS? would the extra heat being pulled downward through the canopy help with VPD?

I suppose one could do that, typically the ventilation system is setup so it slows down or stops if the temperature drops to a certain number then kicks back on when it is too hot.

 

[TreeFarmerCharlie]

Honestly dude, I don't think it matters at all. If it does, I haven't seen it have any affect whatsoever.

It just helps prevent it from clogging earlier than usual. If you clean your filter from time to time then you probably won't notice much of a difference.

 

[JoeBlow5823]

This mod I did holds the filter up as high as it can go and makes it a LOT easier to install and remove. All you need to do is hang it from one of the top support bars.
View attachment 4564165

FUCKING BRILLIANT.

 

[TreeFarmerCharlie]

FUCKING BRILLIANT.

If there is a way for me to make something easier I usually find it

 

[spek9]

If there is a way for me to make something easier I usually find it

I agree that it's brilliant I rarely have to remove and reinstall my filters, but when I do it next, I'm attaching hooks like you've done

 

[JoeBlow5823]

If there is a way for me to make something easier I usually find it

I mean there is a certain amount of work involved in putting the hooks on, but fighting with those cheap ass straps while holding an 8 inch filter up can be a real shit show especially if you have plants in the tent. I had a filter plug up (not sure why it happened but it did) with a full tent and man that was fun to deal with.

 

[spek9]

I mean there is a certain amount of work involved in putting the hooks on, but fighting with those cheap ass straps while holding an 8 inch filter up can be a real shit show especially if you have plants in the tent. I had a filter plug up (not sure why it happened but it did) with a full tent and man that was fun to deal with.

Putting the hooks on once is trivial compared to having to hang a filter/fan combo with straps by yourself. Since my filters and fans are directly connected together, I'm going to go one step further and put a hook on my fan as well, then just use a short chain to the top bar so both the filter and fan are quick-install as a single unit.

 

[TreeFarmerCharlie]

Putting the hooks on once is trivial compared to having to hang a filter/fan combo with straps by yourself. Since my filters and fans are directly connected together, I'm going to go one step further and put a hook on my fan as well, then just use a short chain to the top bar so both the filter and fan are quick-install as a single unit.

Yeah, it wasn't much work at all. The screws already used to hold the filter end caps on were long enough already. All I had to do was bend the hooks around the screw and tighten it back down.

 

[TreeFarmerCharlie]

I mean there is a certain amount of work involved in putting the hooks on, but fighting with those cheap ass straps while holding an 8 inch filter up can be a real shit show especially if you have plants in the tent. I had a filter plug up (not sure why it happened but it did) with a full tent and man that was fun to deal with.

Were you using a cool mist humidifier with tap water in it? If so, then that is probably what caused it. The minerals in the water get released into the mist and it will plug the filter up with white powder. If you are using a prefilter it will clog that instead, but you're better off using RO water in those cool mist humidifiers if you can.

 

[JoeBlow5823]

Were you using a cool mist humidifier with tap water in it? If so, then that is probably what caused it. The minerals in the water get released into the mist and it will plug the filter up with white powder. If you are using a prefilter it will clog that instead, but you're better off using RO water in those cool mist humidifiers if you can.

I was. Never using one of those fucking things again. To much bad info out there about what humidity "needs to be". Ive got 6 plants that have all grown perfectly at 25%.

 

[TreeFarmerCharlie]

I was. Never using one of those fucking things again. To much bad info out there about what humidity "needs to be". Ive got 6 plants that have all grown perfectly at 25%.

Yeah, mine are only really used during veg, but they only really turn on during the dry winter months. I also programmed my own control system to let the humidity swing within range instead of constantly trying to keep it at a specific RH. During the dry months in veg it will kick the humidifiers off when the RH hits 58% but won't turn them back on until it drops below 48%. It will usually do this 3-5 times throughout the day when it's really dry.

 

[coreywebster]

I’m thinking about just punching through the wall into the adjacent closet. I’m only hesitant to do so because I would be pissed if I went through all of that and it didn’t solve the problem.

If the closet is a separate room and wont allow the air to come back into the tent then do it.

 

[JoeBlow5823]

If the closet is a separate room and wont allow the air to come back into the tent then do it.

Better to actually remove the humidity. I was dumping my grow room air into my basement this winter and humidity got crazy high down there. Caught it before any major issues luckily.

 

[coreywebster]

Better to actually remove the humidity. I was dumping my grow room air into my basement this winter and humidity got crazy high down there. Caught it before any major issues luckily.

True, depends on the room I guess. If I dumped all my air into another room in my house it wouldn't make any difference because the rooms are well ventilated.
I should of said open the closet though.
I assumed he is only at 80% because of the constant recirculation, probably around 50% when he is venting properly.

 

[JoeBlow5823]

True, depends on the room I guess. If I dumped all my air into another room in my house it wouldn't make any difference because the rooms are well ventilated.
I should of said open the closet though.
I assumed he is only at 80% because of the constant recirculation, probably around 50% when he is venting properly.

I was giving my girls about 4 gallons of water a day. No amount of ventilation would take care of that unless i was pumping air outside. Even with all the water the furnace was pulling out of the air when it was below freezing outside it was still way to much humidity.