Ah-- missed that! --wow, only 65 ppm? That's super soft water

-- perfect for that nute' line,... OK, as for the nute' ppm, I honestly don't know, I don't really check ppm for feeding in soil, especially for organics, I go by the NPK #'s and relative dilution if needed... That said, there's no sign of nute burn, maybe a touch of clawing which likely is from a bit too much N, (AN has weird NPK #'s, and N is hidden in several of their supplements particularly the Ca-Mg supplement-- 4-0-0 or something like that?) --- Anyway, you're on full bloom nutes, right? Do you have a high PK booster? Might be time for that now,.... and have a look at your total N input from everything, not just the base nutes, to see where "hidden" N is coming from,... Flush was fine I figure, just to be safe,... I dig that you have an A8 unit! --pH looks spot on.... Run-off pH testing method is pretty much lousy, IMO,... As for your feed concentrations, you can dial that back some, if you're feeding several times a week,...
>> Elvis, just to be clear, we're talking about his nute input ppm, not the run-off right?