Hiya All, sometimes I'm so naive that it's embarrassing. When someone says to you "I've reinvented the wheel" just punch em in the nose. I read a lot of info about nutes before purchasing AN Ph Perfect Micro Grow and Bloom thinking that while learning how to run a hydro set up that major fluctuations would be one more challenge I didn't need (at the moment at least). Needless to say, the Ph ain't so perfect. In fact it jumps almost 2 full points in under 2 hrs. I start with distilled H20 and add quarter strength nutes to the water as my gals are still itty bitty and like it gentle. Once that's done Ph is 6.5- 7. Not 'perfect' but not acid rain either. 2 hrs passes and the Ph spikes up to 8.5- 8.8. I've got clean equipment, calibrated milwaukee meters, good water and (par for the course) no idea of wtf I'm doing wrong. I do have GH 3 part series as well, if you can provide some advice I'll be like 'grasshopper'- promise. Man, I'm dumb sometimes. . . Thanks in advance.