I've grown with just about every light, MH,HPS,FLOURO,CFL,T-5,but not led yet. I've found that useing t-5's( I have 3 sunblaze 4foot 8 bulb) I can get the same quality and quanity doing a SOG with the T-5's. A plus too with these lights is that u don't have a heat issue to deal with, helps big...