I don't know personally, light feeds the plants on the last day before harvest, personally, i give them 24 hours light. In the hope to give them a little extra weight. I don't think 48 hours of darkness does anything though. Thats just me though.
you mean you give to plants extra light for 12h.i read somevhere here in riu about this 48h darknes give plant think she died and she produce more cristals.and this extra 12h light give you the results on weight or no diference?i don't know what to think.maybe just cut plant down without any experiments with light.