I assume these are rooted clones... then yes, 24 hours of light will make them grow the fastest.
I usually put them under 24 hours of flourecent light while they root under a humidity dome for 2 weeks, then I put them on a 18 hours light photoperiod under a 1K HPS.
I could let them grow under 24 hours light, all the way to flowering BUT since I notice little diference between 24 and 18 I like saving on energy bills.
Hope this helps, let us know how it goes. |