i have it on from 10 am to about 4 am and ive moved the light from about 3 feet away to 8 inches away. is that good enough?
I yielded 6.7 ounces under a 600w HPS grown completely in 50 percent Organic Miracle Grow and 50 percent Miracle Grow Perlite. Notice how I said ORGANIC. Anything with fertilizer beads and whatnot, I don't think is organic. I started straight from seed also. PH was easy to manage and it essentially just acted like any other soil.. I really have no complaints from it. I don't trust ANY OTHER type of MG soil they sell, and I've seen seedlings shrivel up and die after sprouting inside heavy ferted soil.
I'm not familiar with cfls but I would put them 2 inches from top regular tubes are 2 inches away an they will grow nice