stain/scale on bottom of pool

[bjseeberg]

Thanks for the reply. I am not able to scrape a piece of the scale off to test with vinegar. The scale does not hold together into anything that I can capture. All of the scale is on the bottom or on the pool side within a few inches of the bottom and it just disintegrates when I scrap at it. I tried to put some vinegar in a glass and then move the glass down the side of the pool to the scale and hold it there. Didn't see any fizzing but it was hard to hold for any length of time and hard to see anything with clarity.

I have lowered the pH and am holding at 7.

[PoolDoc]

With the pH at, or just below, pH 7, any calcium scale should weaken and maybe disappear in a few days.

[bjseeberg]

Thanks, I'll let you know if it works. A neighbor gave me something called Metal Magic that he said would work. I'm keeping it as a last resort. I'm reluctant to put anything in the pool that I'm unsure of. Have you heard of this product and its effectiveness in removing calcium scaling?

[Watermom]

Unless that product does something that I'm not aware of, it isn't going to help your situation. Metal sequestering agents keep metals in suspension instead of staining pools. Yours is a different problem. Don't add it unless Ben tells you to do so.