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Poly Salt Free Water Softener Replacement Cartridge (Empty)
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This empty cartridge comes ready to fill with 6 oz of your polyphosphate crystals and will fit the Gen-4 and Gen-5 PSC1 Poly Salt-Free Water Softener. It can also be re-filled by snapping the unvented end cap off. To remove the un-vented end, use a small screwdriver. Please see the instructional video below.