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Hello all, I am nearing finishing my grow room, but I'm hit with the universal grow room problem: ventilation. I have two boxes. Each one is 2x2x4. Both will use hps/mh lights(250w) , which means heat. Additionally I also have a 200cfm sunleaves windtunnel. My goal is to ventilate both boxes...

Ok so here's the deal. I have a 250w/400w MH/HPS switchable n air cooled ballast. I am planning on exhausting passively with a 4" 200cfm sunleaves windtunnel. I got 10 feminized seeds (2 of them are autos). Here is my problem though: grow space. I am working with a grow space of 60" (or 84") x...