Tylö Brilliant Sauna Thermometer - Matte Black salt system You can have some phosphates

You can have some phosphates in your spa water without issue

Cold Plunge Filter fits the Hot Spring® Vigor Cold Plunge 2025+ and the Caldera Spas® Emerge Cold Plunge 2025+

(the 2-3 letters after hot tub name are the first 2-3 letters of your hot tub serial #)

accessories and parts are OEM and come directly from Watkins

Bottom Center Hole Diameter: 1 7/8"

Tylö Brilliant Sauna Thermometer - Matte Black salt system You can have some phosphatesThe Tyl Brilliant Sauna Thermometer is an essential part of the steam or infrared sauna experience. The Tyl Brilliant Sauna Thermometer is a stylish way to monitor the temperature in your traditional or infrared sauna. The Tyl Brilliant Sauna Thermometer is constructed from anodized aluminum with a matte black finish. Features: Color: Matte Black Materials: anodized aluminum Dimensions: 4" diameter Moisture and temperature resistant Fahrenheit &