That happen to be the set that you had at 800ppms for awhile? A rising ph is a pretty normal reaction to nuteburn.....often your very first sign....long before you will see burning in the leaves (well not long.....a day maybe.....)

Bring it back down and keep an eye on the "trend". If they WERE burned it should start to return to normal after a day or two on lower strength nutes.
Weedhound Reviewed by Weedhound on . Second grow same problemo If any of the moderators pick this up, could you please delete my original posting in the general "hydroponics" forum? I misposted.:rasta: Anyway, here is my problem, with a few additions from the original post I thought might be helpful: And it's probably my fault for not posting sooner. Anyway, I've had the same problem both times, and it's frustrating as hell. Using/how I'm doing what: 5.6 ph in nute res Advanced A B for veg/flower Rating: 5