derek here is a link to some useful info for you.
https://eee.uci.edu/programs/gchem/RDGVISSpec.pdf
now you should only be running your
lights 16 hours a day for grow and 12 hours for bloom. I am having trouble with the intensity of my light. I have six
cfl and 1 t-8 on my plants and same as you described, I am ordering a MH
hps combo light setup this week so i can drive my light 5 ft.
CFL are only driving 18 to 20 inches and t8 is only driving 16 inches. neither are the correct light for my system.