Airflow in grow tent question

wallywonks

Well-Known Member
Hi everyone.
So right now in Virginia where I live it has literally rained like every day for 2 months. Where I live lots of mountains and trees. So the humidity has been 100% pretty much the last 2 months. My indoor humidity is floating 60-65% and my indoor temps are floating 76-80 because its hitting 90s again here.

Im running a 10K BTU A/C unit non-stop and using 2 fans to push the cool air into the small room I setup my grow tent this grow.
I can only get the grow tent temps down to 78F with lights off during the daytime.

Im also running an 80pt GE Dehumidifier on Smart Dry pegged at 50% humidity. The humidity in the grow tent with lights off is 58-63%
Its pulling 5 gallons of water out every 12 hrs.

With Lights on Temps are running 79-81F and humidity is between 48-53%
I am venting with a 6" AC Infinty fan outside a window. I just removed the carbon filter to clean it today but I know its going to be smelly outside cause they starting week 6 flower and the tent is smelly.
The dehumidifier is in the lung room and the fan thats blowing cool air from the dining room into the lung room blows right on the dehumidifier to cool the exhausted air coming from the unit.

Unreal. When I grew December through May I only had to dump the bucket 1 time a day.
I have a 6K BTU A/C which is what was replaced with the 10K BTU because it couldnt keep the temps down last heat wave.

So I have questions about a few things.
When using fans to blow air across the canopy to reduce chance of mold in the colas, do I set it up to blow just above the colas and below the LED light or do I have the fan blow through the colas?

I ask because I have read people telling them to have the fan blow through the colas and Ive read other places to not have the fan blow directly on the colas.

Is there a better way to reduce humidity in the lung room when lights are off without putting an A/C in the window and venting into the lung room?

What do you do about negative pressure sucking hot humid air through doors etc in the house?

I feel like it negates the whole A/C and dehumidifier setup. I mean you have to be cooling and drying more air than what is being sucked out of the grow tent.
So should I reduce the fan exhaust speed from max so that the A/C and dehumidifier are actually processing more air than whats being rmoved and refilled from outside.?

It is possible that I could relocate the living room A/C to the dining room and vent the grow tent out the upper door since the tent is near the door and use the fan to blow the A/C air into the room to basically recirculate it in and out of the lung room over and over. This would alleviate the negative pressure pulling hot humid air from outside. Also if I relocate that A/C I can then use the 6K BTU A/C in the lung room. Reasons is because how my breakers are setup. The house is a stone cottage built in 1949 and 3 bedrooms and half the living room are setup on the same 20amp breaker. So I have the Grow tent, 10K BTU and my computer running on 1 breaker. Another A/C would pop it. The outlet in the dining room is on a separate breaker but my TV, video game consoles and fish aquarium are connected to that breaker.

I have this really long A/C utility extension cord from Lowes and tried to see if it would make it to the GFCI in the bathroom next door to the grow room but its a few feet short. That GFCI is on its own 15amp circuit. I use it now to run a high velocity fan to pump fresh air into the grow room and the dehumidifier is plugged in there.

Last 2 grows I used the larger spare bedroom and had the A/C and dehumidifier working together and closed the bedroom door. Problem was during flower I'd come home and my house smelled like skunk bud. Like hit you in the face when you popped the door open strong.

I may go back to that as it kept the humidity constant but I always wondered if the lack of moving in fresh air affected their growth or yield.

Thanks everyone.
 
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