Caldera 31489 | 30 sq ft Spa Filter Cartridge Brand_Pool Marvel easiest algae you ever deal

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Caldera 31489 | 30 sq ft Spa Filter Cartridge Brand_Pool Marvel easiest algae you ever dealThe 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