Mildew indoors sog grow
- Thread starter SDK420
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SDK420
Well-Known Member
Btw I'm sorry for the long paragraphs. Language arts isn't be specialty. I'm just trying to fit as much information as I can into a post.
Let's just say there is atleast 80pt/day x4-5 of dehumidifier. In and around the grow. He used to have a finished seal basement and ran about 35% year round but now they tore down the walls and moisture barrier for whatever reason idk but it appears to be a big mistake.
Heres his plan b,
Intake from outside pumped thru dehumidifier. Intake for grow room passed thru another dehumidifier. 1 dehumidifier in the grow and the rest into the area outside the grow?
Hes about to exceeded the maximum amount of power from his service so more dehus are not really an option
Let's just say there is atleast 80pt/day x4-5 of dehumidifier. In and around the grow. He used to have a finished seal basement and ran about 35% year round but now they tore down the walls and moisture barrier for whatever reason idk but it appears to be a big mistake.
Heres his plan b,
Intake from outside pumped thru dehumidifier. Intake for grow room passed thru another dehumidifier. 1 dehumidifier in the grow and the rest into the area outside the grow?
Hes about to exceeded the maximum amount of power from his service so more dehus are not really an option
ilovereggae
Well-Known Member
Sounds like it might help but I still think you want to also be venting the grow space directly to outside and not dump back into the room otherwise thise DH are doing double work.
SDK420
Well-Known Member
I asked him about that. He said the air leaving the grow room is less humid than the air being drawn from outside so hes afraid to draw too much air in from outside and cause more humidity. What do you think about those pictures?
The small fan that exhausts outside he said is to help draw new co2 in from outside the building
The small fan that exhausts outside he said is to help draw new co2 in from outside the building
Renfro
Well-Known Member
I meant pics of the whole room and how it is built.
SDK420
Well-Known Member
Oh boy that might be a hard one lol. It's a concrete unsealed basement with a room then exact size of 7 8x4 tables. The room has a 2.5ton air handler right in the middle of the room.
Exhaust and intake are on complete opposite ends of the room. The room is lined with 2 inch thermax foam board and taped at all the seams. Carbon scrubber hang from the ceiling. All intakes exhaust are 6 inch.
The 5 tables are spaced apart just enough to walk between. The ac is in the middle of them all. There are 4 squirrel cage fans on floor at opposite ends of the room. 1 pair of 2 fans blows air across floor to other side. Then once to the other side the other pair of fans blows it up towards the ceiling back to the other side of the room.
Then there are 6 oscillating fans on the walls that take care of the canopy. All the fans have filters to filter debris.
Exhaust and intake are on complete opposite ends of the room. The room is lined with 2 inch thermax foam board and taped at all the seams. Carbon scrubber hang from the ceiling. All intakes exhaust are 6 inch.
The 5 tables are spaced apart just enough to walk between. The ac is in the middle of them all. There are 4 squirrel cage fans on floor at opposite ends of the room. 1 pair of 2 fans blows air across floor to other side. Then once to the other side the other pair of fans blows it up towards the ceiling back to the other side of the room.
Then there are 6 oscillating fans on the walls that take care of the canopy. All the fans have filters to filter debris.
SDK420
Well-Known Member
I think he painted the walls with a sealer like kilz before insulating. The floor is painted. The humidity in the rest of his house is about 42 percent while the humidity into he grow arear in general is about 55. It is like a hurricane of airflow in there. It's so much air that he had to cut it back to where it didnt damage all the plants and blow them over.
SDK420
Well-Known Member
He also has custom impregnated carbon fabric on all the fans and dehus and ac as air filters. He had to make these himself but they filter good, hair/dust/dirt etc gets filtered out. His plants end up about 1 ft tall with about 16-32 grams dried each figure the room is 30Lx 10.5x7.5h
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Renfro
Well-Known Member
Has he quantified the amount of water the dehumidifiers are actually pulling? Something doesn't add up. Not gonna have a magic answer other than saying that trying to dehumidify the room while it's venting, even at 50 CFM, is rather pointless if the ambient humidity is higher than your target by more than a few percent unless the ambient air is cold and thus dry even if it's RH% is high. Cold air holds very little water and when warmed up the RH% is super low.
This is eliminated if using a co2 generator plumbed to the natural gas supply.
Renfro
Well-Known Member
Oh no, not during flower. I would strongly advise against that. Probably isn't going to help since it won't penetrate the buds deep enough and it will be detectable in the smoke to those that have a sense of taste lol.
Sorry but I must have lost that in the big paragraph but I wasn't thinking in terms of mitigation other than the environment.
Once your plants have botrytis you aren't going to fight it and win. Proactively using products like Actinovate can really help prevent the problem. Thing is most treatments are unable to penetrate the bud when it's thick enough to have botrytis.
SDK420
Well-Known Member
Okay so he says hes going to cut down the flower room now. He's going to extra seal the floor and door and everywhere else he can.
Then buy a titian atlas 8 co2 controller and a 25lb co2 generator for natural gas, carbon monoxide and dioxide detectors. Use a tiny 40cfm exhaust fan to keep a tiny amount of air exchange and odor control. And start with new clones? After ozone generating the room.
Is 85 a good tempature with 1000ppm of co2?
He aims to keep flowering humidity to 35%?
Should this take care of the problem?
Then buy a titian atlas 8 co2 controller and a 25lb co2 generator for natural gas, carbon monoxide and dioxide detectors. Use a tiny 40cfm exhaust fan to keep a tiny amount of air exchange and odor control. And start with new clones? After ozone generating the room.
Is 85 a good tempature with 1000ppm of co2?
He aims to keep flowering humidity to 35%?
Should this take care of the problem?
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Renfro
Well-Known Member
Why bother with the exhaust? If you want odor control just set some carbon filters in there running as scrubbers recirculating the room air.
If he can keep the humidity under control then it will work. If not then it wont. When the room is empty go ahead and run the sulfur vaporizer for a cycle to help sterilize the room, same with the ozone. won't hurt.
Keep flowering humidity between 35 and 45% and you shouldn't have any issues. Make sure temps don't drop when the lights go out as this causes the RH% to spike. Use a digital temp/humidity that gives you a nice chart to see whats happening in there 24/7. I use an acurite that has a little wifi base station and three sensors I put one in each room. I can get alerts sent to my phone if things go above or below certain numbers I set. I can look at the graph and see my swings. Very handy.
ThatKidiscrying
Active Member
Treat the incoming air with UV light. Lower the fan speed on your central air unit if possible, make it run slower which will help dry the air better as it cools the room. Too fast of a fan speed can pull moisture into the room.....So slowing it down helps two ways.
Get extra dehumidifiers for the dark period.
Defoliate.....
Get extra dehumidifiers for the dark period.
Defoliate.....
ThatKidiscrying
Active Member
You can add up to 4 more sensors for a total of 7. I hate how the graphs don’t show the time more detailed. I realize I could generate the report and get the 5 minute ( I think ) intervals of humidity and temp. It’s a nice system, I love it. It’s the best 150 ish I’ve spent t.
Renfro
Well-Known Member
My dad used to say "close enough for government work" lol
