Clones have never taken 2-3 weeks for me to root. You guys are doing something wrong. For me it takes about a week to start seeing new growth up top (which means it has rooted).
I dont see a fan in there. If you dont have one, get one. Just a small one will do. Also, you need to lower your lights so the little gal doesnt stretch up too high and get flimsy. Looks good other than that. :thumb:
Added lights are not a problem. Heat? Perhaps. I am assuming this is not a new strain to you. Grow it out and see what happens, or if it is causing loss of $$ then chop and make some butter.
Please do, when they are coated with amber trichs like a few of those, i start to drool... I don't smoke very often anymore, but get my fun from growing for others.