still having carbon filter problems

so i went out for a few hours today come home open my door and smelt buds again

i just got a new 6inch phresh filter and i checked for leaks. everything should be fine

i can only extract with the filter i can not use a stand alone scrubber as in scrub with out extracting

i dont want to buy a less smelling strain. i like what i have

what else can i do

if i put a second filter as in filter fan ducking filter do you think it will help

i thought its a humidity problem but i keep checking its never over 60%

i know my plant is just about finished so shes stinking allot but i dont under stand how the fuck my filter can not contain the smells of one small plant in a 2.5.1.6 foot space under a 270w led

so should i try a second filter as in filter fan ducking filter or will one 6 inch fan not be good enough to push the air through two filters. its the only think i can think or trying

Hang a fan/filter above by your lights. Just let it constantly pull and exhaust in the tent.

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stick it in the exhaust duct and power it up
no more smell ever. prob don't even need the carbon filter if you get it mixing well enough.
i use one it's amazing, just don't exhaust it into your house, ozone is poisonous.

macsnax said:

Hang a fan/filter above by your lights. Just let it constantly pull and exhaust in the tent.

Click to expand...

doing that temps will be too hot

TheGreatSouthern said:

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stick it in the exhaust duct and power it up
no more smell ever. prob don't even need the carbon filter if you get it mixing well enough.
i use one it's amazing, just don't exhaust it into your house, ozone is poisonous.

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i considered that but i dont exhaust out of my house

callies said:

doing that temps will be too hot

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I hang mine above the light it’s ok temp wise it’s in a 5x5 with a 600w hps and 315w cmh so there pumping out some heat. It will suck the hot air out because of the height its sitting at. Or do you have a little bit of negative pressure, a bit of negative pressure will help the carbon filter. Silly question is the fan the right way?lol

callies said:

doing that temps will be too hot

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Think he meant as well as what you already have running, not instead of.

callies said:

i considered that but i dont exhaust out of my house

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That's part of the problem.
If you were exhausting out of your house your rh would be lower (in most cases) and your filter would work better.
Right now its the other way around and even if only a tiny bit of smell isn't cleaned then its going to gradually build up.

You could try adding and inline filter or an extra one at the duct exit but end of the day its no substitute for having things set up properly.
Other than that a good dehumidifier might help your filter work better.
You could also try a bigger filter so air has more contact time.

DustyDuke said:

I hang mine above the light it’s ok temp wise it’s in a 5x5 with a 600w hps and 315w cmh so there pumping out some heat. It will suck the hot air out because of the height its sitting at. Or do you have a little bit of negative pressure, a bit of negative pressure will help the carbon filter. Silly question is the fan the right way?lol

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thats how i have my set up but its exhausting the room not recirculating. my grow room is under a large amount of negative pressure
it is sealed apart from the air intake and the carbon exhaust my filter and fan are both ratted 470 plus cfm maybe i am pulling too much air but people say more is better as long as the filter can handle the cfm

im thinking i will get rid of all ducting and run pve pips instead to 100% remove the possibility of air leaks. maybe the duct is leaking where i cant find it.

if i want to recirculate my air i will need a ac plus dehumidifier. yes or no

coreywebster said:

Think he meant as well as what you already have running, not instead of.

That's part of the problem.
If you were exhausting out of your house your rh would be lower (in most cases) and your filter would work better.
Right now its the other way around and even if only a tiny bit of smell isn't cleaned then its going to gradually build up.

You could try adding and inline filter or an extra one at the duct exit but end of the day its no substitute for having things set up properly.
Other than that a good dehumidifier might help your filter work better.
You could also try a bigger filter so air has more contact time.

Click to expand...

so i am pretty much stuffed when it comes to having a filter work correctly due to the fact i cant exhaust out my house and it is making my RH too high

are you saying a second filter on the exit will have little benefit ad my option are to run a dehumidifier or vent out my house

everything i read say above 60% humidity will reduce a filter to 80% efficiency i would of expected 80% to still be enough for my size plant

i guess running dwc would not help with humidity although id be interested to know if it makes any difference over coca as that might have to be something i consider if ill reduce my RH

i could maybe vent out under my floor but im not sure if it would just come back in the house

callies said:

so i am pretty much stuffed when it comes to having a filter work correctly due to the fact i cant exhaust out my house and it is making my RH too high

are you saying a second filter on the exit will have little benefit ad my option are to run a dehumidifier or vent out my house

everything i read say above 60% humidity will reduce a filter to 80% efficiency i would of expected 80% to still be enough for my size plant

i guess running dwc would not help with humidity although id be interested to know if it makes any difference over coca as that might have to be something i consider if ill reduce my RH

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Everythings worth trying.

Slow down your fan speed, assuming you can without greatly increasing temps. A bigger filter has the same effect as running a smaller one slower. Or running two smaller ones with a Y splitter. Its all the same, increases contact time and reduces smell.
Dehumidifiers are not expensive but depending on situation may not be ideal to run 24/7 (loud bastards)

I think its the 80% rh mark that really starts to have an effect on performance but that's base on one pass of air through, not recirculating.

I would avoid pumping humid air into the floor space, the damage that can be done long term would be very expensive to repair.

Do you own the house?

Your grow shouldnt be under a massive amount of negative pressure per say and reducing the fan speed might allow the filter to filter more per say.

Carbon filters arent perfect and are a borrowed product from another industry, you must tweak things to make them optimun and even then its hard to hit perfection

coreywebster said:

Everythings worth trying.

Slow down your fan speed, assuming you can without greatly increasing temps. A bigger filter has the same effect as running a smaller one slower. Or running two smaller ones with a Y splitter. Its all the same, increases contact time and reduces smell.
Dehumidifiers are not expensive but depending on situation may not be ideal to run 24/7 (loud bastards)

I think its the 80% rh mark that really starts to have an effect on performance but that's base on one pass of air through, not recirculating.

I would avoid pumping humid air into the floor space, the damage that can be done long term would be very expensive to repair.

Do you own the house?

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i do own the house and yeah i though pumping humid air into the floor would be bad. i would do one out the roof but i dont want ducting visible but its looking like i might have to until i can work something better out.

how long of ducting do you think one fan 6 inch could push air. my house has like a series of small tunnel under it just enough to crawl though but the closest vent under there is a decent distance. i dont want to run a booster fan as i wouldn't enjoy going back down there often preferably never again
ill just guess like 40 meters of ducting. could i do that would out a booster fan

Kingrow1 said:

Your grow shouldnt be under a massive amount of negative pressure per say and reducing the fan speed might allow the filter to filter more per say.

Carbon filters arent perfect and are a borrowed product from another industry, you must tweak things to make them optimun and even then its hard to hit perfection

Click to expand...

why shouldn't my room be under massive amount of negative pressure???. i like my doors sucking them self closed. i have played with my fans and tried all speeds. none made any difference. all i can smell is carbon in my room not weed but if i leave my house then come home i smell it so does others so i guess
the real answer to why my shit isn't working must be because i vent back in to the same room i am growing in

callies said:

i do own the house and yeah i though pumping humid air into the floor would be bad. i would do one out the roof but i dont want ducting visible but its looking like i might have to until i can work something better out.

how long of ducting do you think one fan 6 inch could push air. my house has like a series of small tunnel under it just enough to crawl though but the closest vent under there is a decent distance. i dont want to run a booster fan as i wouldn't enjoy going back down there often preferably never again
ill just guess like 40 meters of ducting. could i do that would out a booster fan

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I was about to say they can handle a lot of duct but its fan dependant , every fan has different pressure ratings, but still 40 meters is a lot, only the fan manufacturer could tell you that, might be they have that info on websites.

Have you considered running duct under the floor and installing a couple of new air bricks which you would seal your duct to?
Or in the roof you can use vents or tile vents which are fairly common and just look like added ventilation.
Even bathroom vents don't stand out as looking dodgy, you see them all over some buildings when they have been retro converted to flats from houses.

coreywebster said:

I was about to say they can handle a lot of duct but its fan dependant , every fan has different pressure ratings, but still 40 meters is a lot, only the fan manufacturer could tell you that, might be they have that info on websites.

Have you considered running duct under the floor and installing a couple of new air bricks which you would seal your duct to?
Or in the roof you can use vents or tile vents which are fairly common and just look like added ventilation.
Even bathroom vents don't stand out as looking dodgy, you see them all over some buildings when they have been retro converted to flats from houses.

Click to expand...

bathroom vents would work i could vent in to the room then vent that room with out having ducting running up the wall. i would then have to vent the roof i guess

i have a few of then vented bricks under my house but non close to where i grow. i could remove a brick and install one closer but i dont now if im that keen but i could get the duct run down to 10 meters if i did it

im thinking ill have to try the bathroom vent

Most filters have a lower cfm for recirculating you should try lowering the fan speed. You can also try wrapping the top of the filter with seran wrap. Will help if they didn't pack it good enough

Gemtree said:

Most filters have a lower cfm for recirculating you should try lowering the fan speed. You can also try wrapping the top of the filter with seran wrap. Will help if they didn't pack it good enough

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i fixed the problem but i still dont understand why i cant exhaust my grow closet in to my room. its a small closet venting in to a big room and humidity was only in the 60% range at max

venting the room it self seams to do the trick and humidity is in the 50-55%. now im not smelling buds