OG Kush Grow #1

03-20 - Week 14 03-20 18:00 Water 1 gal 6.5 pH water at week 10 levels + 4 ml CalMag instead of 1 ml 03-21 18:00 Left alone, still getting browns spots... check pH meter and runoff 03-22 18:00 Left alone 03-23 18:00 Water 1 gal 6.35 pH water at week 10 levels + 5 ml CalMag instead of 1 ml, runoff at 1800(!) b/c I've been reading the meter wrong, so need to flush next watering 03-24 18:00 Left alone, further yellowing, gonna have to flush 03-25 18:00 Recalibrated pH meter with 3-point calibration, suspect it was measuring HIGHER. Confirmed against liquid test kit. Flushed with 10-12 gal of pure RO water to lower runoff to 300 ppm (pH meter WAS reading 7.3, was 6.7 - 6.8 post calibration). Then reestablished a clean 1 gal 6.4 pH water at week 10 levels with 2.5ml Calmag instead of 1ml. Runoff at 400 ppm post feed 03-26 18:00 Left alone