Quote Originally Posted by greenthmb
Well, I tested the pH of the soil again, and it's 7.0 on the dot. I also tested the water that I feed it, and it has a pH of 6.6. So both are a little high. I typically do not test the pH of the run off, but will start at the the next feeding. I have looked at the FF soil feed schedule, but only for feeding instructions.

If this were a pH problem, why would it be affecting only one plant? Does pH affect each strain differently? Also, what should I do to safely lower the pH?

In addition, should I go ahead and give the Cal-Mag?

Any and all help is much appreciated. Thank you.
i recomend cal magic by general hydroponics its the only organic cal mag available. use with every feeding at half strength. I would also recomend useing thrive alive micro nutes also at half strength with your normal feedings. Techna flora is the only organic brand of that. It's expensive but they give away there complete set of nutes, and I mean everything. I think you might be able to get sample set online. I get a business card from there tent for a free sample set at a music festival every year in Michigan. They arent small samples either. but theres only 2 organic products in the whole set. but its worth it for free. I don't know if you care about organic or not either. I am having same problem with one of my plants also. Don't get it. I am not in flower yet though.