Basic 13 Inch Filter Disc state_Mississippi and sand and gravel are

and sand and gravel are all available but sold separately

When CO2 is dissolved in water

The non-vented poppet insures that water from the circulating system

This is a Taylor Base Demand replacement reagent for various Taylor pool water testing kits

This Warning Jellyfish Stings Are Painful Stay Out Of The Water With Graphic Sign measures 12 x 18 inches

Basic 13 Inch Filter Disc state_Mississippi and sand and gravel areThis is a 13 inch filter disc made by Universal Filtration. The disc OEM style is designed for basic DE filters. A spacer is required (not included). Universal Filtration discs are injection molded from 100% virgin, high impact styrene. They are then covered with multi filament, polypropylene fabric the industry standard for over 30 years.