Leaves Curling and a Bit Leathery

[nevergetsold]

I often get leaves like this on my plants after several weeks into flower. I must echo the experts here, get a handle on your pH. It is more than just the pH going in. You might want to add pulverized lime to your MGrow soil to help buffer pH issues. 2TBSP/Gallon.

Ignore me if Rusty says otherwise

FatSean: Thanks for the response. I am still waiting for my calibration solutions to arrive (maybe tomorrow) and I will check pH of the tap water and the runoff and post for advice. The plant seems to be doing fine now but I agree that I need to know the pH.