I test the grapefrruit before and after. I'm a pp ppm testing fool, I HAVE TO KNOW!!

That's the problem, they aren't growing fine. I keep getting hard purple stems and rust spots and fan leaves doing a corkscrew dance. I get a high 5 pH but fert at 6.5 -6.8 and keep it between 700-800ppm every two weeks. Maybe i give too much, about 1qt every feed in a 1-1/2gal pot. I start with 008ppm water, add cal-mag to 250ppm, add fert to total 700-800 ppm.
seldomBLUE Reviewed by seldomBLUE on . A good out-of-the-bag medium It hasn't been long since i purchased my ppm meter, now i find myself testing anything and everything from grapefruit juice to toilet water. I have a few white widow clone that will be ready to pot in a day or two so today i saturated the medium with 008ppm water and will let them sit til Sunday. The runoff comes out at 2450ppm. WHAT THE HECK IS GOING ON? I'm using Ocean Froest potting soil. Isn't that stuff supposed to be ready to go right out of the bag. My pH going in is 7.0 but coming out Rating: 5