Quote Originally Posted by McDanger
Never,
Are you still getting leaves with the problem? Old leaves will not get better.
I just did a mini flush on the 2 I have in flower and it seems I am in the same boat as you. pH 6.7 going in and 7.2 coming out so I think this may be a problem caused by too high pH. I think this is the same reason my clones are not making it. Mothers not in optimal health. I will not be using the soil mixture I made up in the future. This is my fault since I mixed the soil myself. I am 75% sure that at least my problem with this is caused by too much manure in the mix screwing everything up. I also checked my ppm. Going in is 160ppm dehumidifier water with the runoff at over 2400. I think the ph issue is causing lockout and the nutes are building up in the soil.
Just my :twocents:
It is odd that the leathery look does not start until there are 3 or 4 new nodes above it that look fine. At least I have somebody else to sort this out with since this does not seem common enough to find using the search function.
I'll check back in a couple days to see if it is getting any better.
McDanger:
The new leaves start out fine but as they age they develop the same darker green leathery look. The plant is 5-1/2 weeks old and is 9.5" which is guess is OK but I think it could be better if I could solve the problem. Based on your input and that of the other folks posting here, plus some searching, I have concluded that my problem may be a combination of a high pH, and a lack of potassium. By now it may be lacking the other nutrients as well. What I am going to do this weekend is feed it for the first time with my Pure Blend Pro Grow using a solution adjusted down to 6.0-6.5 pH, adjusted with vinegar. Since my tap water is around 7.5 that will hopefully pull down the pH. I'll take a few photos before and after and post them. Together we may solve this problem.
Tks