Newbie - with cloudy pool

[PoolDoc]

Photos updated.

Gritty feel to your vinyl => probably the remnants of sand algae. See this page: http://pool9.net/algae-s/

[Dad2handz]

I read about the sand algae. Am I understanding correctly that I need to lower my ph to 6.8-7.2 mad it will go away without scrubbing the walls? How long does it normally take to clear up? Also, do you need to stay out of the pool while waiting on this to clear? Thanks!

I've really appreciated the help this year!!

[PoolDoc]

Yes, lower the pH . . . AND areate. You want to strip alkalinity. A lower pH + low alkalinity environment will soften and dissolve the particles.

You can swim while this is going on; I don't know how long it will take, but more than a week. You do NOT want to speed it up, by pushing the pH to, say, 5.0. Doing that will damage your liner.