you'll probably want to throw as much light in there as you can while still being able to manage the heat. cfls work fine for vegging, but not quite as well for flower. so you need more of them. red dominant spectrum.. 60/40 red/blue... red being low kelvin, blue being high kelvin.

CanGroIt

I don't by into that weakening genetics thing.. there are virus's that can affect dna, which would have an effect on the growth of your plants if one were infected.. but other than that, they're clones, exact replicas of the moma plant.. There's no where dna can really vanish to ya know? Plus you have to define weakening Genetics.. I'm assuming people would mean slower growth rates, less potency, that sort of thing.. but those are just genetic traits.. but it would never be that cut and dry.. cause and effect.

if there were decay, there would be all sorts of nutty things going on, clones growing 3 lobe leaves, streaking, split stems, hell.. even rapid growth or super potency..

Also, grats on post 420