He has a 4" in/out squirrel cage fan sucking directly out of the middle of the 2.5'x3' hood, above the bulb, and an oscillating fan blowing side to side in front of the hydro table. He is also going to put a smaller fan down on the floor tilted upwards into the hood near the passive fresh air intake, but he currently doesn't have the fan.
dejayou30 Reviewed by dejayou30 on . Room Temps So my friend hooked up everything in his room for a trial run for a couple hours before he cracks the seeds, and the temps were 78° in the room and about 86° under the hood with only 2 out of 3 fans running. The hood was also 20" from the tubs, so the bulb was probably 15". It is a 1KW bulb. Humidity was 61%-67% for the two hours. I know its supposed to be 70-80° and 50-60%, but are these temps and humidity levels too high? He is starting with 4 150W CFLs to veg and then only using Rating: 5