Since I have one strain that all came from the same mother Ill take 5-6 cuttings off from the clones before I move em' into the flowering room.Its a way of clearing up the lower bottom branches and with my diy aero cloner I have had a pretty fair success rate (45 out of 48 last time) with scrappy little cuttings that I wouldnt expect to make it in dirt.The clones were probably a bit over 15" to 18" tall before I moved em' into the other room.Hope that helps.Take care,be well,and most of all be safe.