For Phals, I had excellent success with keeping the supplemental light on 12 hours a day. So the plants got whatever came in the window (maybe 4 hours of good light, then very indirect as the sun shifted) plus the supplemental light. (I used fluoresecents, didn't see any difference between ordinary daylight bulbs and grow lights so I stayed with "cheap")) When I added those extra hours of light, I went from very little reblooming to nearly 80% reblooming.
Last edited by Roberta; 01-15-2020 at 11:14 AM..
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