Hey Ace, I used to use rockwool, now I clone in Rapid Rooters (thank you Zandor), in coco fiber and transfer to buckets when they and I'm ready.

I run 15 min. on, 1.5 hr off 24/7 at least (it works for me).

PH is tricky, I usually have to adjust daily, sometimes twice daily. PH seems to stabilize around 5.6 - 5.9 about 3 days after nute change. I change nutes every 6 - 7 days, and add alittle after 3 -4 days.

I also use 5 in. round airstones in bottom of buckets.

Peace, PIF