Its a good idea and I'd do it except that I am renting and if the landlord goes in the backyard, he will see the fan...I dont know what I would say its for since it is getting pretty cold outside here...thats the other thing, the air from outside will probably be too cold (its about 45 now and getting colder and colder each day) and the temp in the closet is only at 84 - 86 now with the glass.

The growth rate has increased incredibly since they have been under the HPS though (they were under 2 20w fluorescents and not cfl's either, just regular t12's, 1200 lumens per tube)...they have only been under the HPS for maybe a day and a half in total since I was having problems with the ballast.

I have noticed what looks like little yellow spots on the original two serrated leaves of a couple of the plants, but very faint...could it be time for nutrients soon?