Greetings, I'm doing a partial refill on my pool due to high CYA. I have a SWG. Prior to this forum and my TF-100 I was using the corner Pinch your wallet store for water testing. Since they had me adding a bottle stabilizer every time I had my water tested I'm pretty sure that was the culprit because from what I've read, using a SWG and not adding anything that has CYA in it shouldn't raise the CYA. It's at around 120, the pool math says I need to change roughly 5000 gallons, I know my well has a high iron, do I need to add something to take care of the high iron? When I bought the house back in March I had the well tested and the raw water had a total Iron of 1.58 mg/l if that helps.