stain/scale on bottom of pool

[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.