I get 99.9% success with this formula in a hydro cloner. Per gallon
5 ml cal/ mag
2 ml general hydroponics rapid start
2.5 ml dyna grow KLN
6 ml clear rez
PH 5.5 to 5.8 that's it
I cut my big leaves to lessen the weight of them and to keep from covering the tops of the other clones