Check out's
Lou's Cloning Technique. I've had 90% success rate and have done over 80 clones using this method now. It would be a higher success rate, but I got over zealous on one batch and took too many clones which led to fungus.
I just built and put to use an Aero Cloner only July 5th. Everything looks good soo far. The clones aren't droppy, and they don't show any yellowing yet. I'll have more to report hopefully by this weekend. But just did 2 parts RO water and 1 part TAP. (I used RO water because my water comes out of the tap at 580ppm.) Didn't PH the water.