Doing a reservoir change today as it's been almost 2 weeks. I see my ppm is rising a bit even after topping up with phed RO water (EC 0.065 ppm 60). Not sure why but she is due for a change. Would you keep the nutes at 0.35 EC 160 ppm or should I up it a little bit when I do the change? Was thinking 180ppm and 0.4 EC?Thanks:)


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