Unicel® C-2302 – 25 Sq Ft Rainbow/Waterway Spa Filter Cartridge – part #C-2302

Turn off the spa and open the filter housing.

Remove the old cartridge and dispose of it.

Rinse the new C-2302 cartridge thoroughly with a garden hose.

Insert the new filter into the housing and screw in the bottom connection.

Close the housing, restore power, and check for proper water flow.

Q: What spa brands use this filter?

A: This filter is commonly used in Rainbow and Waterway systems—check dimensions and threads for compatibility.

Q: How long does the filter last?

A: Typically 12 months, but replace sooner with heavy spa use or poor water conditions.

Q: Can I clean and reuse this filter?

A: Yes, rinse weekly and deep clean monthly to extend life.

Q: What type of connection does the bottom have?

A: It uses a 1-1/2" SAE threaded bottom fitting.

Q: Is this made with genuine Reemay® media?

A: Yes, it is manufactured by Unicel using high-quality Reemay® polyester.