Our Monarch® CD Ozone System mixes concentrated ozone bubbles into the water to neutralize contaminants. When used in conjunction with the @ease SmartChlor® Cartridge, you’ll get our most effective water care system. As an option for virtually chlorine-free water care, combine the CD Ozone System with Monarch Silver Cartridges and MPS non-chlorine oxidizers instead of the @ease cartridge. The CD Ozone System is standard on Caldera Utopia® models, and optional on Paradise® and Vacanza® models.

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MPS Non-Chlorine Oxidizer

MPS is a non-chlorine oxidizer used with the Monarch CD ozone system and Monarch Silver Cartridge to help maintain sparkling clean water in your Caldera® hot tub.

Monarch Silver Cartridge

The use of silver ions inhibits the growth of bacteria and reduces daily spa water care for naturally fresh water. This solution for hot tub chemicals saves time and maintains water quality.

Monarch MPS Plus®

Monarch MPS Plus is a non-chlorine oxidizer with aromatherapy. It helps keep spa water crystal clear, and enhances your hot tub experience with pleasing scents, all in one convenient product.

MPS Test Strips

Use these test strips to monitor your spa’s MPS, pH, and alkalinity levels when using the MPS chlorine-free oxidizer.

Top 5 Hot Tub Buying Mistakes & How to Avoid Them

Hot tubs are an investment in your health, happiness, and recreation. Coming from the experts, there is a lot to know about hot tubs. Look at our guide to learn what it is that you should avoid when considering a hot tub!

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Water Care Systems Caldera Spas FROG Water Care

The FROG @ease In-Line System with SmartChlor® Technology automatically maintains clean water with pre-filled cartridges to eliminate the guesswork and combine chlorine and minerals for self-regulating sanitization.

Gazebos & Enclosures Sequoia Spa Shelters Tubtop Model C

A fully enclosed structure for maximum privacy & protection.

Manual & Automated Cover Lifters Hot Spring CoverCradle II Cover Lifter

The second generation of this innovative system, the CoverCradle II features a single pneumatic gas spring that makes covers easy to lift with little manual effort. Requires 24″ clearance.

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