So I stupidly wasn't pH testing my water, everything was fine for veg, about 6 weeks into flower the above happened to one of my plants. I was able to harvest some of it early. Then, it started happening to another plant that was about 2 weeks behind the first one to go. Decided to buy a pH meter and found my tap water was way too high. I watered twice with pH adjusted water and totally stopped the progressing of clawing and leaf death on the 2nd plant. Third plant is shows no signs of clawing.
Either the pH of my water changed or some new nutes i started using were bringing up the pH enough to cause nute lock. A little bit of lemon juice in tap water went a long way in fixing the issue.
Just thought I'd provide an update since in the last post, people guessed literally ever possible combination of error.
So I stupidly wasn't pH testing my water, everything was fine for veg, about 6 weeks into flower the above happened to one of my plants. I was able to harvest some of it early. Then, it started happening to another plant that was about 2 weeks behind the first one to go. Decided to buy a pH meter and found my tap water was way too high. I watered twice with pH adjusted water and totally stopped the progressing of clawing and leaf death on the 2nd plant. Third plant is shows no signs of clawing.
Either the pH of my water changed or some new nutes i started using were bringing up the pH enough to cause nute lock. A little bit of lemon juice in tap water went a long way in fixing the issue.
Just thought I'd provide an update since in the last post, people guessed literally ever possible combination of error.