Unicel C-7350 | 50 sq ft Caldera Spa Filter Type_Thermo Pile You keep your current sanitizer

You keep your current sanitizer program

biscuits and cobblers

take ScumRay by the tail and gently sweep it back and forth across the water

Rotating cartridges also gives each one time to dry fully between cleanings

1 x DuraVent 58DVA-16A Pipe Extension - 16"

Unicel C-7350 | 50 sq ft Caldera Spa Filter Type_Thermo Pile You keep your current sanitizerThe Unicel C 7350 delivers 50 square feet of filtration built on Reemay polyester media, capturing debris down to an average of 20 microns. Built to meet or exceed OEM specifications, it's the replacement cartridge for new style Caldera Spas, taking the place of Caldera parts 73532 and 1019401. Filtration is the quiet backbone of clean spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is what removes all