Unicel C-7447 Filter Cartridge Chemical Type_Bromine and your sanitizing needs are

and your sanitizing needs are met

BioGuard Sparkle Up is a cellulose filter aid intended to be used when your filter experiences difficulty in filtering very small particles

giving you more time to enjoy your spa

total alkalinity

Unicel C-7447 Filter Cartridge Chemical Type_Bromine and your sanitizing needs areUnicel filter cartridges are simply the finest replacement filters you can buy for your pool or spa, being made of the finest materials to meet or exceed OEM filters. Its heavy duty polyester is designed to last far longer than cheaper alternatives, while having more pleats to improve filtering capacity. Best of all, Unicel filters are made right here in the USA for the highest possible quality, allowing you to buy with confidence.