WHY PHOSPHATES ARE BAD FOR YOUR POOL AND HOW TO GET RID OF THEM

Calcium carbonate scale (the brighter white) and calcium phosphate scale (the yellow scale)

When phosphate levels get too high it can create dull, cloudy or hazy water conditions. And, if your pool has high pH and calcium hardness levels, it can contribute to the formation of harmful calcium phosphate scales on surfaces and equipment in any type of pool. But this is especially problematic for saltwater pools.