FreshWater Mineral Spa Cartridge by Caldera Spas

FreshWater Mineral Spa Cartridge

Keep your Caldera Spa water crystal clear with the FreshWater Mineral Spa Cartridge. This silver-based mineral stick sanitizes your hot tub naturally — reducing chlorine and bromine use while eliminating bacteria, odours, and cloudiness.

Why You'll Love It

• Reduces chlorine and bromine usage — gentler on skin and eyes
• Silver ions actively kill bacteria for cleaner, safer water
• Keeps spa water sparkling clear with minimal effort
• A noticeable difference you can see, feel, and smell
• Easy to install — simply drop it in and let it work

Replacement Schedule

Replace the cartridge every 4 months for optimal water quality. This cartridge is a direct replacement for the Nature 2 Spa Mineral Stick.

Compatible With

Designed for Caldera Spas. Also compatible with most hot tubs that use standard mineral cartridge systems.