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Thank Dave,... that newest growth, I can't tell in that light, is it just colored up or is it necrotic patches? Looks the latter; if so, you have a lockout or lack-of micronutes, likely B in this case,...
What's the dosing and frequency of the feeds?
I'd look into getting some sort of quality soil pH probe, not a cheapo unit, or some multi-meter thing, they are lousy for accuracy...
Look for the Accurate 8 soil ph probe, or a identical unit under a different brand name (in EU generally); once you see it, you'll know...
--> long probe here, not the stubby... the hitch is if the soil pH is off, more feeds may make matters worse, not better; knowing in-pot pH is critical for many reasons...
Worse case scenario is to do a flush with water only, RO/Di so the mineral content doesn't skew results of pH testing of the run-off... put through about 20% pot volume, then take a sample of the run-off for ph testing and see,.. it's crude, not reliable, but if it's way off then we know at least what the deal is and can address it...
What's the dosing and frequency of the feeds?
I'd look into getting some sort of quality soil pH probe, not a cheapo unit, or some multi-meter thing, they are lousy for accuracy...
Look for the Accurate 8 soil ph probe, or a identical unit under a different brand name (in EU generally); once you see it, you'll know...
Worse case scenario is to do a flush with water only, RO/Di so the mineral content doesn't skew results of pH testing of the run-off... put through about 20% pot volume, then take a sample of the run-off for ph testing and see,.. it's crude, not reliable, but if it's way off then we know at least what the deal is and can address it...
