using the bbb chart

[Watermom]

You don't need to run the pump that much. I typically only run mine about 8 hours per day and some people do less.

If it is dirt, you have to be very careful when you vaccum to move the vac head REALLY slowly. Otherwise, the dirt just gets into the suspension of the water and you don't see it. But, then, when the water quiets back down, it redeposits back on the floor and gets in those same nooks and crannies as before. It happens in my pool if I get in too big of a hurry while vacuuming.

Try to vacuum and go extra slow and see if you can get it out. Not to say you're not going to get more because you will. There is no way to have a perfectly pristine outdoor pool all the time. Believe me, I try! But, there is always going to be dust and dirt blowing in the air and there are always going to be leaves and bugs.

Let us know a day after you vacuum if it took care of it.

[Watermom]

Also, just to verify ----- you did try the 'overnight test,' right?

That is where you test your pool in the evening after the sun is off of it, and then again in the morning within an hour or so of sunrise. If you lose no more than 1ppm of chlorine overnight, then most likely it is not algae.

[sobrien2]

yes its hard to tell with out the add on to my tester im waiting on so i have run it at 20 ppm since we talked.

[PoolDoc]

You might want to do the DE test -- it's rather common for sand filters on AG pools to have problems from oversized pumps. Dirt 'leaking' through the filter is absolutely a possible result of a filter with problems, particularly one that's missing some, but not all, the sand in the filter.

DE -test => http://pool9.net/de-test