cutting leafs and switching light cycle?

My lady has been on 18/6 light cycle for about a month now when is a good time to switch to 12/12. Also how do i know which leafs to cut off and does it matter how i cut them? Thanks for all the help!

billawho12 said:

Also how do i know which leafs to cut off and does it matter how i cut them?

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when they start turning yellow, use scissors or whatever and cut the leaf stem don't tear them off.