Because my salt water pool was not producing chlorine, the pool store tested the water for phosphates. It said it had 300 ppm. They sent me home with a phosphate remover. I waited 72 hrs and back washed the DE filter, even though the pressure never went up. I brought a sample in again, and this time there were 500 ppm!!! He had me double dose the pool with a remover. Pressure never rose, but backwashed as indicated. Phosphate level remained at 500ppm!!
They tested for nitrates. It came back at 26 ppm. I was told to empty the pool water down to a foot in the low end.
Do I have to??!!! Is this the only alternative?!! I have a month left before we close the pool for the winter. I would hate to pay for new water and salt, only to drain the pool again in a month for winter!!!!