Kurt Ullman wrote:
After chasing no chlorine for most of the summer, our pool store
finally go around to testing for phosphates (run off from our grass
service). They found a bunch. Their suggestion was to basically
replace the water in the pool. Any way to chemically or other wise leach
out the phosphates? Seems like something we will have to multiple times
over the course of the summer.

Just a thought: Before all this talk by the pool industry about
phosphates and phosphate removal products, thousands of pool were kept
clear simply by ...proper chlorination. In other words, there is
absolutely no reason to replace the water multiple times during the
summer because of phosphates.

There are many other reasons why you would be 'chasing chlorine' other
than high phosphate levels.

The secret to clear pool water is two-fold: proper levels of sanitizer
efficiency and pH.