maybe I explained it wrong. If you go to supercloset.com you can see the cabinet I got, but mine is the new double cabinet. I dont know if they are advertising it yet, but is is two cabinets back to back. When I talked to them they said that the light would be plenty. could I have been lied to. and Garden Knowm to answer your question I kept my light about 18 in. from my plants. If my light is not enough is there another light I can add to the light I already have? Also my light is in the middle of these two cabinets. You mentioned fresh air, yes my ventilation is a hydrofarm active air blower w/ a carbon filter. I also have 2 fans blowing on the inside. I hope this helps answer your question.
Thanks.