B
Bdubs
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I would simply say that high PH probably is your only issue with that seedling. I target 6.0 all grow if possible. Measuring runout after feeding gives you your next feeds Ph to offset to target Ph. The main goal is to use as little Ph ip or Down as possible. But use it if you need to, that target Ph is critical 5.5-6.5. Outside that range the plant has nutrient uptake issues and of that is out of range, assume that to be the problem before you assume a deficiency from nutrients. (When you get to that point).