Let’s see pics and don’t just adjust your ph with up and down you gotta correct the issue I would drain reservoir add new water with nutrient solution With proper ppm and if it’s not at the right ph within an hour at the most then add your ph up and ph down and never combine the ph up and down if you ph your water from 5.5 up to 7.5 using ph up Don’t try to correct that by adding ph down you have to do a full flush as in nutrient change and start from scratch imo you should never have ph up and ph down in the same reservoir I believe it creates a nutrient lockout even if your ph is on and all those salts and bases aren’t good for the plant