So I've finally finished building my new grow box and I'm hoping it will solve all the issues I've been having at our 'new' house. The basement gets wet and doesn't have the best fresh air. My old tent just sat on the ground and the incoming air would have been moist and riddled with gross stuff from the water on the ground. My first few rounds in it were OK, but i had powdery mildew issues with the last one..
This is about as wet as it ever gets, and its rare but does happen. I put the box up on concrete deck blocks to isolate it from the moist, cold, GROSS ground lol.
I used pressure treated wood, and wrapped the bottoms where they touch the blocks in plastic. The blocks seem to wick a bit of water so hopefully this will isolate the 2x6s from that.
Put up some plywood walls, then hung light, scrubber and black white plastic.
I put a huge door on the front, and another kinda huge door on the back so I can access everything...I'm hoping this will be necessary when my scrog screen is overloaded with huge buds
Here it is finished with the doors on. I put 2 4in intakes up by the ceiling where the air is warmer, drier and cleaner. It brings this air to the bottom of the box on both sides, then the scrubber sucks it out the top at the back.
In my old tent temps at the canopy never really went up over about 65f with the light on, I'm now sitting between 76-80 with my 400w going which is great. If it gets any warmer I'll add another intake...the air in the basement itself is about 65 degrees