with my DWC set up, the first two grows had crazy PH climbing rates, but with this third grow, i feel the hydroton has really been flushed and neutralized because now it more if my water has nutrients in it or not. just plain tap water will climb like 1.5 2 points in a day or so at my place. with more nutrients, it climbs slower.. now with 1500 ppm veg growth, i cehck the ph every other day, and it only climbs .5-.7 at the most. things smooth out, and the growth of an unstressed hydro plant is fucking insane