Oh man, looks like you got all kinds of deficiency problems. I'd say Nitrogen, Magnesium, and Potassium .

What is the PH of your water? How much are you feeding them? Looks like they also might be suffering from some heat issues.

Ok, sorry...I see that you now added some of that info..let me read again.

I'm guessing you either got your PH to high or to low and this is causing nute lockout, that would describe all the deficiency problems. If your tap water is reading 7.6, that sounds right to me. I've seen that most tap water seems to have a high PH. Your doing hydro right? If so, I think a PH range to shoot for is around 5.6-5.8. I grow in soil so it's different for me.

Try getting that PH right and lets see what happens.

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