davygee1977
Well-Known Member
hi guys just need a little help here, done a couple of one light grows in past but going to start new grow with 4 600watt hps lights in a 2 metre by 2 metre tent, now my question is!! I know the lights going to generate a lot of heat, i have a systemair 8 inch extractor with a rhino pro carbon filter, think specs are 1030m3 per hour, what size of intake fan do you think i will need? Would a something about 300m3 be enough to bring enough cold air in to help keep temps down? I stay in uk so temps outside aint to warm