The SWG will raise your pH and so will high FC. It is bleaching out the TA test. I would go ahead and try to lower the pH and see if that improves the appearance of the water. Is the SWG still running? What is the water temperature?
Understood.
Zea - I have PH Down here, but I am apprehensive about using anything that’s from the big box store. Do you recommend something else? Also how much should I add? Just start by trying to drop it slowly?Understood.