Newbie - Stain removal via ascorbic acid

[PoolDoc]

Just to echo what Janet said -- don't backwash daily. That does NOT help things, when you have a sand filter. The way they work, the dirt become part of the filter, and big dirt pieces end up helping to filter little dirt pieces. But, if you backwash daily, that can never happen.

So, wait till you see a pressure rise before you backwash.

I'm not sure adding the muriatic acid had anything to do with the cloudiness. You've had really low chlorine . . . and I'm guessing the pool is still in use. If so, continued use with low chlorine will cause a build up of something that will cause a pool to go cloudy or even almost milky. If your pool has been used a lot, the cause may be the people goo, and not have anything to do with muriatic acid.

You need to keep your chlorine low BUT you need to add it often enough so that you ALWAYS have at least a little chlorine present. ALWAYS, ALWAYS, ALYWAYS . . . or else you've gotta stop using it.

And . . . you need to go back to lowering the pH.

Ben