murky green water

[Watermom]

I would trust my own readings over those of the pool store. The green is not caused from the pH. What is your CYA level? The calcium is very high. You are right that a vinyl pool does not need calcium and a low calcium reading is a non-issue, but a high calcium reading can be an issue and cause cloudy water. I don't know if your problem is a combination of cloudiness from the calcium plus an algae mess or what. Cloudy and green is usually algae and cloudy and clear is usually a metals problem.

Don't add any more pool store products. Try the pH test again when the chlorine level is not high. You say that the walls are not slimy, but is the floor?

[aylad]

Also, can you test your chlorine tonight after the sun is down, and test again in the morning before the sun hits the pool, and tell us both those readings?

[PoolDoc]

did you get your problem resolved?