Yo Im a recent graduated hort major, and my best advice would be to keep your pH around 5.8 to 6.2. Your plants can't take up most of there micro nutrients at a pH level below 5.4 or so. A lower pH is only better toward your finishing stages. The reason your pH keeps rising is b/c you are using good stable nutrients and they are designed to stay around 6.0, if you really want to drop your pH that low i would cut out the fulvic acid and that should help.



green leaves
Str8jeepin4pack Reviewed by Str8jeepin4pack on . Rising pH Zandor (or anyone else knowledgable about such matters), This novice can't seem to keep his nutrient solution at a constant pH. I'll set the pH to about 5.3, but within 7 or 8 hours, it will rise to over 7 (around 7.1 or so). I correct the pH by adding granulated citric acid, which takes it back down to the low 5's, but again, in only a few hours, it's risen well above the applicable range (5.2-5.9). I know pH usually drifts up (and this is even beneficial to the plant as it can absorb a Rating: 5