Was told too check run off for ppm build up and ph levels is this how you check it correctly
My photos running 5,2 ph 1000 ppm in week 3-4 flower my autos at about 4-5 weeks with ph run is 6.2 ish with ppm of 500-550 I plan on flushing the photo with 6.5 tap and flower nutes at 6.5 ph too add...