It could be nutrient deficient because your not in the target ph range. Continue with normal feeding just adjust the nutrient/water solution. Why are you storing the water? and what is the ppm and ph out of the tap just curious?
I bought two cheap ten dollar ppm meters off ebay, they claim it's around 105 ppm out of rap, I stored it just to pump oxygen into it....?
Oh around 8 I adjust to 5.8 or so sometimes up to 6.4
you need a ppm buffer solution I dont know if anyone told you that. You adjust the ppm meter until it matches your buffer solution then your good to measure.
