what you using smart pots?and i see hydro stone.5.7 seams low to me for ph.but i use soil not hydro.i know in soil 6.5 is optamal for all nutrient uptake.but in veg want slightly lower helps take up for nitrogen and in flower slightly higher to take up more prosperous. just dont go above 7 or lower than 5 or it locks out critacal nuts.theres a chart you can look up for nutrient uptake.it tells you every nutrients all 17 and there optimal ph range for best consumption.
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