Unicel 5CH-37 | 37.5 sq ft Hot Spring Filter Type_Thermometer Pro Tip: The 2 Liter

Pro Tip: The 2 Liter size is the one to choose if you're on an auto-ship or dealer program

The smaller package means fresher chlorine

1 x Hot Spring 77179 Hydrostream Spa Jet

its one incredible water heater

Unicel 5CH-37 | 37.5 sq ft Hot Spring Filter Type_Thermometer Pro Tip: The 2 LiterThe Unicel 5CH 37 delivers 37. 5 square feet of filtration across 221 pleats of 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 select Aquaterra and Hot Spring spas, taking the place of Watkins part 303279. Filtration is the quiet backbone of clean spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is