So, you have 4x27w CFLs 1750lm each. That makes sense. Forget about 100w. Its just confusing. Large amount of lights from the tubes will be wasted in that big area. 4 CFL will be enough at the moment. Reach 3500lm per square foot then you're good. You can switch the tubes on when the plants are bigger.
tevfik Reviewed by tevfik on . its been three weeks alright ...i started 3 weeks ago,18 seeds in 9 cups...9 seeds in 5 dixie cups sprouted....i started the seeds under 24/0 lights,at 3500 lumins(2 x 100 w cfl's)soon as the smallest cleared the cup rim,i upped the light to,7.000 lumins(4x100w cfl's)and dropped the time to 20/4....growth is good to real good(in my inexpierenced opinion)no chem's yet...soil has them...height of tallest...4+inches,gearing up for transplanting...i'm waiting til they get an average of 6 inches...i have a styrofoam Rating: 5