the strain will affect how long it takes to root so dont panic...some root fast n some dont. in my experience clones prefer a slightly warmer rez temp in a bubble cloner,75-80 works well imo. yeah your right, you dont need to add nutrients until roots have emerged but when they do 1/4 strenght nutes n a ph of 5.5 would be a good start. keep in mind using distilled water means you would need to use something like cal-mag to supplement nutrients/salts in ur water. what nutes you gonna be using?...this is gonna grow under a cfl right? can u post some pics for us to see what your working with? good luck with your project G.