run off and ph.

Hi everyone , I'm a newbie so so I'm hoping I can get some guidance. I'm growing one gorilla glue and two blueberry auto flower plants . They are in 2 1/2 gallon air pots and growing in fox farm ocean forest potting soil. I'm also feeding the plants fox farm big bloom , tiger bloom and microbe brew at 1/2 the amount that's recommended . I don't know if using inorganic fertilizer with organic soil is counter productive. My question is what should the ppm of the run off be? I'm in the 4 th week and they are starting to flower. Also what should the run off of the ph be?
When I fed my plants the nute solution was 516 ppm and ph. was 6.57 The last time i checked the run off , the ppm was 1330 and the ph. was 5.95. Any help would be appreciated.

Thanks J

Those numbers are pretty normal. You really don't need to worry about runoff unless something looks drastically wrong. It does help to feed to plenty of runoff on your feed days when using inorganic nutrients in soil-that will help prevent salt buildup and help keep the PH stable.

Forget runoff pH. It’s useless. Do pay attention to the high EC and give just pH adjusted water a couple of times. Do NOT flush.