It's all over the place... best way to use cfl's is to get them as close as possible without burning the plant, up to within an inch from the plant. Their effectiveness decreases dramatically every inch the light has to travel. Text <-- more info there... even got some reflector ideas for ya. They explain it pretty well in there. The cfl's give off 360 degrees of light, so they use a soda can to wrap tightly around the bulb. That might actually give some sort of reflection since the can is an inch or less away from the bulb. The way I was picturing yours is that you would use one bigger reflector for several bulbs, maybe not as efficient... or maybe I just misunderstood your idea :jointsmile:
bigtopsfinn Reviewed by bigtopsfinn on . Budget/Refrigerator grow The Situation: I have a side-by-side refrigerator that currently does not work, but I can't do any damage (i.e. cut vent holes) to it because its going to get fixed eventually. The Box: Approximate Interior Dimensions (for the side we're using for this): 59" tall (we'll call it 5ft) 18" wide 24" deep So that's 3sq ft on the bottom, and according to a post in the lighting section, I want 5000lumens/sq ft which is 15,000lumen total. Rating: 5