Apologies for a question that I’m sure has been posted a million times, but struggling a bit with my first grow…
The plant: wedding cake “auto flower” by RQS…day 90 from sprout. Only entered pre flower about 20 days ago, when I switched from 18/6 to 12/12 which is why auto flower is in quotes…
I cannot for the life of me get my tent humidity down below 70%. I’ve seen people say to not buy a dehumidifier for in the tent, but I’m not sure what else to do.
The setup: 4x4 tent in my basement. 6 inch inline exhaust running full bore 24/7. (1) 6 inch oscillating clip on fan , angled downwards on the plant. (1) 18 inch pedestal fan set at its lowest height pointing upwards at the exhaust filter, catty corner from the oscillating .
Outside humidity is 61% (there is a dehumidifier in the basement)
Since I’m in the flowering stage, I was told to not open the bottom flaps, but it seems logical to do so and maybe put a fan outside of the tent pointing in, to send cooler, dryer air.
Tent temperature is 71, which puts me at .8 VPD. My buddy said to put an AC unit in there, but I don’t want my temps dropping that much.
You can do a second inline fan drawing air in. Then you get dry air and if you add a carbon filter it’s cleaner air. You only want it on like 10-20 % though or the tent will balloon and smell will come out.
Oh and I added a heater to heat the air and in turn drop the RH since there’s more water capacity in the air. My basement sits about 60/60 and I dehumidify my lung room down to 50 in flower.
I went through the same problem. I tried a small dehumidifier did absolutely nothing. So here is what I ended up doing. I opend both bottom flaps with the screens. That allowed more airflow from the lower humidity air and let the exhaust fan pull out the moist air. I also raised tent temp some. Warm air will hold more moisture up helping to lower RH. So with plenty of air flow through the plants it kept them dry and from getting bud rot with a rh of 56.
I grow in a basement as well. If i were you, i would crank up the dehumidifier thats not in the tent. Only way to controll the environment, is by controlling your lung room environment. It takes a good size dehuey if your basement is good size. A small one did nothing for me, a 70 pint, did the trick. It will raise the temperature. 70 rh is asking for problems after week 4 of flower.
I have a lung room in the basement with a 5 qt dehumidifier and it handles 75% house humidity pretty well. It does drive the temps in my tent up 3-5 degrees when its running alot.
Took took temp to 80 with lights on i have a 6 inch infinity exhaust fan and two 6 inch infinity fans. They move air nicely. I was in week 7 and noticed i had bud rot on one bud. So cut that one off. So that is when I needed to get my humidity low. I generally never had to pay much attention to it my house ac takes pretty good care of managing humidity. This plant put out the moisture oh
Perfect. I will try that as well. Discretion isn’t an issue, my worry was being in an older damp unfinished basement, I’d be likely to get some insects in there, but hoping to not be an issue
I don’t know if this matters, but last month had issue with temperature. I have a monster house dehumidifier, but problem was with 96 degrees in tent. Went to an AC Infinity 8 inch exhaust and dropped to 81 degrees and took a few points of humidity with it.
Running it at 3 on scale of 10.
