Quote Originally Posted by bcpem View Post
The only thing I can add here is that upon start up this year I lost a bit of sand from the sand filter because I didn't realize the cap was off at the bottom. Should I add some sand or get all new sand? Could that be the trouble? I do backwash and there is junk that comes out so I figured it was filtering ok. Again, thanks for your advice.
+ A partially filled sand filter can definitely result in a pool that never clears completely, but stays hazy.

+ If your pool is clear enough to see someone on the bottom (safety issue!), and adequately sanitized (your's is), then it's OK to swim.