I ran'em all and settled on 19/5 cause my math was off when setting the timer lmao too much medication that day I guess. I may try 24/0 again this winter as temps drop and I'm running autocobs so may need to for temps.I've done 18/6 20/4 and 24/0...and when I was running 24/0 there was no difference to running any of the other times,just a bigger electric bill lol.

From the horses mouth, scientific or not, if you're visibly noticing a diffrence in quality, 24/0 next run forsure! Thanks for chiming in!We go 24/0, I think it makes for faster development.
Never did a scientific trial on it, but we had some double grape under 24/0 in one part of the farm and 20/4 in another. And by eye the 24/0 looked way better.
Coloration will be strain as well as temps but we just plain water the last few weeks and they get a nice fade on.
Anything 18/6 or more is going to work and not be detrimental to growth. Rest is personal choice for the most part.
I ran'em all and settled on 19/5 cause my math was off when setting the timer lmao too much medication that day I guess. I may try 24/0 again this winter as temps drop and I'm running autocobs so may need to for temps.
Timers can be fiddly things if you've got the segment timers,especially if your well medicated lmao.