Ph and ppm run off gorilla grow

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 300-400 more ppms too the auto. Am I doing this correctly?

Bump

You're doing it correctly only if you're a proponent of worrying about your runoff. I would worry more about what you're putting into the plant/s and how it or they are responding. Otherwise you end up chasing your tail. Do you have an issue that is making you worry, are your plants not growing well? Think about it...what do you like better, the great meal you or your better half made that you're about to eat...or the shit that comes from it? Keep it simple...trust me.

Nerver check runoff it tells you nothing, if you want to ignore that go ask the person who.told you in the first place as no one does it here