Yea, I'm stumped man... it's not just mega crop, it happened with fox farms bottled nutes too. I was thinking my water is just bad, but it's not every plant either... roots look good... ppm is stable...
In semi-related news, I switched back to tap water. My ro system sprung a leak so I just said fuck it. Ph issues started before this tho. My tap water isn't bad (approx. 120 ppm) but i always liked my ro because it had a uv light on it to kill the nasties. But screw it, I'm gonna see how the tap does...
I have had decent luck switching back to gh3 on a couple plants tho. I had some leftover from a couple grows ago. It hasn't been long but numbers look good. Funny, I switched from that cuz it gave me ph issues!
I'll bet a lot of my issues so far as a grower is because I don't really know what the fuck I'm doing and am still trying to figure all this hydro shit out