right now, i just have 4 bagseed seedlings under cfl's under the stairs...one of them looks a little odd, not the bottom "round leaves" but the second set look "crumpled up" like theyre in compacted soil or something. but the new growth leaves up top look fine. so i dunno whats up with that. i have them on 20/4 right now. the soil is a mix of mg ( i know i know) and home made compost, with a little sand. i dunno how well theyll do with the compost, but if things go south, i'll transplant into better medium. good luck to you sir!