Brown spots on the inside of the leaves ?

[Gingerbeard]

orion7769 Forget about the vinegar. I just stopped using it because it is only temporary, as others have said. The pH will go back up pretty quick. I'm using GO Box for nutrients. It's one that doesn't need water to be pH'd. The pH is stable throughout.

[Rwise]

I agree, loose the vinegar, maybe diluted as a foliar spray, but for PH it is only good for minutes! Sulfur is slow but get there,,, also peat moss can be cut into the soil for a PH down, its PH is ~3.5