I did side by sides and it is significanty different between the 18/6 and 24, plants don't have near the vigor or overall health in 24 as they do in 18/6. When I did it, even the using a 16/8 to conserve HID power did better than the 24 did...root developement is drastically different as well.I stay with 24 all the way and then switch to 12-12 for flower...~ogr
I agree entirely. Moms and plants vegging for flower are very different beasts though. I try to keep my moms under 24 hours for the bonsai approach.24 houres IMO keeps the plant developing its roots more, rather than its foliage. (once again) IMO 24 hours is better for sog growing and 18 for the big individuals.