Which filters does the Caldera UTOPIA CANTABRIA take?

Filter cartridge 73722, Filter cartridge 74817.

Caldera UTOPIA CANTABRIA hot tub filters: 73722

Pleated cartridges clog with use. Replace one that stays dirty after a rinse.

Pleated cartridges clog with use. Replace one that stays dirty after a rinse.

1Filter cartridge73722

Part numbers come from Leisure Time (source), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.

On the label of the control box in the equipment bay, or in the owner's manual.