Thanks Dave;
@ CaptainHowdy: my bad; I should have checked. I doubt that Quikrete would call it pool sand, and bag something else, so I'm satisfied it *is* pool filter sand.
Time to back up, and go at it again.
Sand filters tend to fail to filter for (2) reasons:
1. Wrong sand (which we've ruled out.)
2. Too little sand, which should be checked.
3. Pump too big for filter, resulting in dirt being pushed THROUGH the filter.
Can you -- or have you already -- verified that the sand is at the proper level in the filter?
Assuming that your answer is "yes!", there are two further steps you can take:
1. Send us the make/model of both pump (not electric motor ON pump) and filter, so we can match them up.
2. Do the DE test. Get a small bag (or large -- it's not that expensive) bag of DE. Put 2 cups of DE filter powder in the skimmer while the pump is on, and the skimmer operating. Check the pool return: if DE shoots back into the pool, your filter is not working properly. If it does NOT, then your filter is working, and the DE will help filter whatever's clouding your pool. However it will also make the filter stop up much more quickly. If you like, you can add more after each backwash, till the water is clear.
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