Gotcha.
Cloning in rockwool is easy btw.
A+B to ec 0.6, 4ml/L rhizotonic, ph- bloom down to ph 5.5.
Keep that till you see roots, and then raise ec to 0.8, and when you start seeing new shoots 1.2...
Then normal growing..
Rhizotonic is a MUST.
I picked up my rockwool cubes yesterday and sprayed the roots (and the whole cubes) with 0.9 ec a+b and 5ml/L rhizo, and I swear, from morning till evening all the cubes had 2-3x more roots penetrating from below and fuzzy as hell. They look more like mushrooms than roots. The cubes where the roots were already exposed and got an aero-style treament are the ones that benefit the most.