Unicel C-7350 | 50 sq ft Caldera Spa Filter Brand_Pool Marvel Combined with the Reserve sodium

Combined with the Reserve sodium bromide "bromide bank" at fresh fill and periodic shock from Renew

flocculates fine particles so your filter can catch them

DuraVent 4PVP-E90 PelletVent Pro Elbow - 4"

and exactly right for a pool

That is not a shortcoming — it is what fits the compact skimmer housings these spas use

Unicel C-7350 | 50 sq ft Caldera Spa Filter Brand_Pool Marvel Combined with the Reserve sodiumThe 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