HTH Filter Cleaner 1 Qt.

Pool filter cleaner is an essential part of your regular maintenance routine. It quickly and effectively cleans your pool filter to improve filtration efficiency, prolong the life of your filter, and turn a murky swimming pool into a beautiful oasis. As a multi-purpose formula it is great for deep cleaning all filter types and acts as a backwash aid for D.E. and sand filters. This product is compatible with all swimming pools and all filter types.