I placed two PC under 12/12 to sex. When I renturned the plants back to 18/6 the plants did not stop flowering. They continue to flower. I tried taking a clipping to clone but the plant never grew roots. What am I to do to stop the plant from flowering and how do you clone a flowering? If I can. I've read where it is difficult to clone a flowering planet. I also thought that I would be able to return the plant to an 18/6 cycle.