I am using a 30 site EZClone and cannot figure out why the hell my clones are not making it, out of 30 clones i wound up with 6 clones, The cloner runs 24/7, I am using the air pump (that came with it) for extra oxygen I used 4 gallons of RO water with 4 ounces of Powerclone cloning solution, and then i added 4 drops of Superthrive. I also cut the leaves back and set the PH to 6. The temp is at 75 degrees and the humidity at 50% I have a fan running 24/7 and an exhaust running 24/7, lights are on 18/6 They look fine for about a week then they start turning yellow and looking bad. The stems protruding from the bottom side of the neoprene usually try to bend up and over the course of a few more days they get real soft like they are rotting out. The few clones that do make it started showing roots at about 14 days.