Hello, whats up

I am pretty sure this problem can be resolved by adjusting PH better and keeping it at 6.0 but I was just curious of what kind of problem this deficiency is and how its cured ? See picture..Thank You
FlyPaper Reviewed by FlyPaper on . curious of what deficiancy this is? Hello, whats up I am pretty sure this problem can be resolved by adjusting PH better and keeping it at 6.0 but I was just curious of what kind of problem this deficiency is and how its cured ? See picture..Thank You Rating: 5