Hmmmmm.....back to the drawing board. But, I am with ya one the passive exhaust thru carbon. What I was thinking is if I had those T's in that 4" PVC, and those T's all had a floor grate, I could suck that air in from the outside, floor level, and it would naturally exit the T's inside the growroom and keep well ventilated. I had planned to exhust the air from the top already. I am trying to design a kick ass room, and I have to watch I dont assemble a wall or whatever and then I cant get everything where I want it. Floor is built, as is both side walls, just not put together yet. Plus I am putting my outlets directly in my room wired to their own 30 Amp breaker for each one. So before I do anything, I need to always be looking ahead a few steps. I want to build it ONCE......lol I already have 2 Sun Gro II 1000 watt HPS/MH lights, so ventilation and fresh air is a concern even though they will have their own fans sucking the heat out as well. Hmmm, I even wonder if those 4" fantec fans would fit PVC. If not I could crosscut both ways and jam in there, band clamp it, and duct tape if needed.

I covered the walls with blueboard and will ty-vacked them when I assemble all the walls. Sounds neurotic, but I want to keep noise down, and atmosphere as close as needed without making 97 changes daily. So, I figured best to seal it off as good as possible, and go for airtight. I can put in and take out what air is needed versus hoping some gets in from the outside and some escapes to keep temps down.

b0nger
bongerstonerd00d Reviewed by bongerstonerd00d on . Fan Questions What I plan to do is cut a 4" hole in each of the 2"x6" that I used for my side base for my grow room on the front left corner, and rear right corner (doesnt matter), and then sit a carbon filter on a shelf right next to fan, then feed my fresh air in thru 4" PVC Pipe, using 3 T's that come up flush with floor. I'll router out square holes where each T is and fabricate some mesh grates to keep whatever from getting into my piping. (I like this idea, by the way). Now, I guess what I am Rating: 5