Caldera 31489 | 30 sq ft Spa Filter Cartridge Brand_Pool Marvel SL-2DVP DVP to SLP Reducer

SL-2DVP DVP to SLP Reducer

The result is soft water with much less odor

unthreaded collar that seals by close tolerance against a matching socket in the filter well

easiest algae you ever deal with is the algae that never forms

swimmers can jump back in the pool in just 15 minutes after treatment

Caldera 31489 | 30 sq ft Spa Filter Cartridge Brand_Pool Marvel SL-2DVP DVP to SLP ReducerThe Caldera 31489 filter cartridge delivers 30 square feet of pleated filtration for cleaner, clearer spa water. It's one of the most widely compatible cartridges in the Watkins family of spa brands, serving a broad range of models across decades of production so it's a dependable replacement to keep on hand. Filtration is the quiet backbone of good spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is