BioGuard Kleen It 1 Qt. | Pool Filter Cleaner Type_Topside Control with more than 45 years

with more than 45 years behind the Unicel name

water flows through them on every circulation cycle

Do not allow the solution to get into the pool

Hot Spring spas are engineered as hydraulically balanced systems — matching filter fabric to water flow — and they filter 100% of the water

Each chlorine cartridge typically delivers weeks of sanitizing before the system flips over

BioGuard Kleen It 1 Qt. | Pool Filter Cleaner Type_Topside Control with more than 45 yearsBioGuard Kleen It is an acidic filter cleaner that dissolves the mineral side of filter fouling scale, rust, metal deposits, and hardened clarifier residue that no amount of rinsing or backwashing will remove. Filter media gets dirty in two fundamentally different ways, and this is the distinction most pool owners never learn. One kind of fouling is organic: body oils, sunscreen, lotions, and the greasy film they leave behind. The other is mineral: