depends how big you want it. I have seen plants under 10 inches tall and nothing but 1 bud that weighed in at at least a quarter. do that down a shoplight lenght and you could have about an ounce and a half maybe. but I would use 2 more shoplights for the sides and overdrive all of the ballasts 2x
harmonicminor Reviewed by harmonicminor on . Fluoroscent grow lights Alrights i got two doubles, enough light or not thats the only i question i got grow room 4*6*4 some feedback would be great asap Rating: 5