From what I am learing with CFL's you cannot get too much light in a small space, meaning if its crowded with 4 bulbs say in 18" sq. then its probably good for finishing a main cola. The CFL's suck at penetrating below the upper fan leaves. Currently I am experimenting with them vertical on 1 side of the plant. You have to get them really close and have good reflective surroundings.

Just like with any grow light you must keep the ambient temperature down around the plants, it will always be warm above the lights.
Hempsouth Reviewed by Hempsouth on . CFL'S Whats best for veg/flower? Watts, Lumens? Ok i have read a lot of grows here with cfl's and no one really has a standered of light as to how much to veg/flower for optimum growth. With all the cfl growers now, wouldn't it be nice to find some sort of standard guideline. As of now, its just the more the better it seems, or someone that thinks they can use 1 cfl from start to finsh. Im not saying some people have it dialed in, i could put out some names, but we all know who you are:thumbsup: I wondered if we could do some side by Rating: 5