Green Fog in Pool - new user/never posted anywhere....

[aylad]

Follow Carl's advice and get your chlorine up to shock level (20 ppm for CYA that high) and hold it there until it clears up, as he said. However, once you get it cleared up and clean again, with your CYA that high, you need to not let your chlorine EVER get below 5 ppm, and I would keep it up closer to 7, just to give yourself some wiggle room. If you let it go below the 5 ppm, you're inviting the algae in....

I would also stop using the pucks in the floater--they are continuing to raise your CYA level, and you're going to have to keep upping your chlorine levels to compensate, if you want your pool to stay clear......

Janet

[CarlD]

You'll notice that Janet's advice complements mine and others.