You should use rockwool cubes and cloning GEL, the rooting medium(rockwool) and hormone(cloning GEL) is more important than trimming the leaves. I cut lots of clones, and I get 99-100% survival rate, and I am here to tell you that you can leave anywhere from 2-10 whole leaves on a clone. The real trick is to shave very, very thin flaps into the outer tissue of the cutting where it will be inserted into the rockwool, be sure that all of the areas that are cut are covered with the cloning gel.

You can use the jiffy pellets, but you will get a higher survival rate, and more consistant results with rockwool.

Lords0th