I could use a bit of counsel on managing my grow environment. I have a new room setup and I am having a bit of trouble managing the variables. I suspect that I have underpowered air conditioning, but I also want to get a better sense of what I need to focus on as I invest a few thousand into new cooling.
The room is 18x18x9’6" tall. I run Gavita 1000W Proe-e lights on SL2 controller (12 of them) and I intend to supplement them with another 12 315 CMS lights for some broader spectrum and UV. I grow indoor hemp for CBD.
The room is inside of a warehouse that is not air conditioned, and I live in the southeast. The warehouse temps go up to 100 regularly in the summer, and the humidity here is 80% regularly. We also have wild temperature fluctuations in the fall and winter that really keep you moving to manage temp and humidity. Achieving ideal VPD is a challenge to say the least. Staying in the curve is nearly impossible with what i have.
This week, I harvested the first crop (very successful grow) and have rotated in the next plants, and while I’m managing the temps well (using only 9 lights while they stretch in transition) I am seeing good humidity levels of 40% and thus the temp is easier to manage as well.
What I am hoping to learn from the other members is what are the steps to getting this environment stabilized? In other words, what piece of equipment do I focus on first? The AC? Do I need independent Dehumidifier or is Mini Split sufficient? I do not run CO2 now, so I try to keep my temps down around 74 with lights on. The room is insulated on walls and ceiling. i am contemplating using a spray foam on the entire exterior to seal it up and improve the R-factor more.
Room has 3 AC units (39K BTU) These are to be replaced with 2 Mini Splits in near future. 6 wall fans on canopy, 2 fans on underside, CO2 monitoring at 350-400 regularly.
I typically run my lights at night so the AC isn’t fighting daytime temps and the light heat.
I look forward to any advice on how to approach my next major expenditure on the room.
Thanks to anyone who has experience with this type of a room or situation.