Thank you thank you ALL, I love the debate back and forth. I'm having abnormal pH drop on 15 gal res, .5 DOWN in 12hrs, they are drinking alot of water though, but are topped off with fresh RO water, so Nute burn too high ppm is not the issue, I'm around 900ppm week 7 bloom. But they are showing tip/edge curl and 'ram horning' (LMAO, first time I heard that! I thought foxtailing was what big ass colas do when they are blooming, a genetic trait). I've had no issues all grow, running AN 3 part pH perfect plus additives and Great White. I suspect I have issues in the roots, bad smell was the first sign. Sounds weird, but I always smell my reservoir every, multiple times, so when it changes, I can definitely tell. Bad Smell + Ph dropping = Problem. I've done everything, h202, flushing, azatrol, EXCEPT, EWC tea. I WILL be trying this to see if it solves my problem, I will post back here. Thank you very much again for the info.