Well it could be Ph but doesnt really look like it. It looks more like youve got root burn slack off a little on the fert for a while and see what happens. To check the Ph though you can buy Ph testers for like 5 bucks. Hope you find the problem.
buddha Reviewed by buddha on . P? K? pH is 6.5 hi everyone...this is in soil, problem just at very bottom. Rating: 5