There is sand at the bottom of my above ground pool that keeps coming back.

[aylad]

Is it just on the bottom, or is it also forming on the sides?

[AnnaK]

It could just be dirt and dust, like Watermom said. That happens to all pools. You might try using skimmer socks. They do catch a lot of this fine debris.

Do you have steps that are weighed down with sand? If so, could that be your sand source?