I have had faster rooting time under 18/6 (2 weeks) than 24/0 (3 weeks typical.)

The majority of nutrient uptake and transport happens during a dark cycle. It seems to make sense that they would root faster with a dark cycle as well.
khyberkitsune Reviewed by khyberkitsune on . which hydroponic light cycle is best? is it better to grow with a 24/0 cycle or 16/8 or is there a better vegetative cycle? Asking for future reference... Rating: 5