drift, it should do it for you, my cloning has always been pretty much all or nothing, all root or none do. once I started the bleach (I was using rapid rooters then) it took off and has stayed that way. I just got the cloner a few months back from a generous fellow farmer I used bleach in it from the start and the same results. I did try snype's method for a couple runs but it caused only dead cuts and slime but the bleach gets it done. I use regular walmart stuff, 8.25% sodium hypochlorite, just cut and into a glass of water until I collar them and put them in and the 1ml of bleach for the 2 gallons of water it holds and wait. every 2 days I put in another 1ml and top the water off if it needs it. I usually have enough roots to transplant in 7-9 days