Really need opinions guys

Hi there I’m on my first grow with roughly 4week left till harvest,I gave pk13/14 3 weeks to early (for only 5 days) been on normal feed schedule since and have noticed ph run off is 8.0,I was planning a flush tonight to lower ph.what I really wanted to know is if when I resume feed would it hurt to PK for another 3 days,forgot to say I’m in coco and ph going in is 6.3.

Imho I only concentrate on the ppms with my run off. Im in coco as well

With coco. You flush every time you pour fert solution to it.

Im currently running two 5 gall fabric. 29 days into veg. Each pot gets 5 quarts twice a day. Coco has to stay soggy. When the flip happens. I'll be giving them 5 quarts each, three times in a 12 hour period.

I only check incoming PH and PPM. Not the run off. At first, when I started coco, I'd check runoff PPM to get an idea how much water they need to wash the extra salt out. (Flush).

Run off should look like a heavy rain storm.

Forgot to add.

Your PPM run off should be less then +200 of the incoming. I'm at 750ppm. My run off shouldn't be higher then 950ppm. If it is, I'll need to up the amount of fert solution to make sure the extra salt levels are in check.