Sand stained on liner

[JVal]

Hey guys, I do not have an algae problem but I do have a sand problem. My friends and I went in the pool last week after the beach but didn't hose off when we got to my house so some people had some sand on them. I just realized today that there was sand on the liner so I tried brushing it off, vacuuming it and I even got in the pool and scrubbed it wth a sponge. Nothing seems to be working. I don't want to have stained on the liner and it's don't want to have to pay for a new liner. Help please! Thank you

 

[JohnT]

Welcome to TFP!

If it looks like sand but won't come off the liner, it is probably scaling rather than sand. What is your CH level?