I found this fan i think will work great but im not sure.its about 2 1/2 feet long with 2 seperate fans 1 blowing in and 1 blowing out.i was going to build it right into the wall of my grow room about half way up,good ventalation bad ventalation?should i just get a small fan and put it on the floor?is that best?
you need a constant air flow into and out of the growroom, either by forced induction or passive. (ie a fan out at least, not necessarily a fan out) also, one or more oscillating fans inside the growroom to help circulate the air better. try the faq on overgrow, it should help, peace and karma, dragoon