Natural Water Care Systems
Who doesn’t want FRESH Water in their hot tub? We have several options for our new and existing hot tub customers that make water care easier than ever. From salt water spa to ozone and in-line cartridge based system, we’ve got you covered with the following three options.
Option #1: FreshWater Salt System
Available on all 2019 (and newer) Hot Spring Highlife® and Limelight® Collection spas, and now available on 2019 (and newer) Caldera Utopia® and Paradise® Collection spas also! FreshWater is easy-to-use salt water system eliminates the worry of keeping spa water clean, clear and sanitized for a full year.* With just a little salt in your spa water, the system generates chlorine automatically so you’ll spend less time measuring and adding chemicals. This unique system makes spa ownership easier than ever by removing the guesswork and hassle of water care maintenance.
- More natural-feeling water with no itchy, dry skin or eyes
- Fewer chemicals added and no harsh odors
- Simple water care means more time enjoying your spa
- Conserve water by reducing spa drain and refills to once a year*
Option #2: FreshWater Ozone Based Water Care

Ozone based water care is a tried and true method to keep your water clean and clear, while reducing the need for chlorine. We’ve been using Ozone technology on hot tubs for DECADES. This system combines the cleaning power of the FreshWater® III high-output ozone generator with MPS non-chlorine oxidizer and silver ions for protection against contaminants. Think of it like a 1-2-3- punch against bacteria and contaminants in your water.
Here’s how it works:
- Continuous cleaning. Ozone and silver ions are released into your spa water continuously by way of a high output Corona discharge cell. It’s technology that generates a high concentration of ozone which works to neutralize contaminants on contact and enhance water quality.Easy maintenance. Simply dose the spa water with MPS after each use of the spa and add chlorine weekly.
- Reduced levels of chlorine. Enjoy safely sanitized spa water, without the need for a constant chlorine level residual.
What you need to make an Ozone based spa work?
MPS Chlorine-Free Oxidizer: This fast-acting formula refreshes and brightens hot tub water. Plus, it’s pH neutral, so it won’t alter water chemistry. We also have MPS Oxidizer available in four soothing scents — Citrus Blossom, Island Escape, Spring Shower, and Zen Garden.
Silver ion Purifier: The FreshWater Ag+® continuous silver ion purifier further reduces the need for chlorine by inhibiting bacterial growth. Silver ions are released into the water automatically so there’s no chance of under- or over-dosing. Simply replace the cartridge every four months.
MPS Test Strips: Use these test strips to monitor your spa’s MPS, pH, and alkalinity levels when using the MPS chlorine-free oxidizer.
Option #3: FROG® @ease® In-Line Sanitizing System
All Hot Spring Hot Spot® and Caldera Vacanza® collection spas come ready to use this in-line cartridge system that automatically dispenses SmartChlor® chlorine and minerals for carefree water care. It self-regulates based on the water’s sanitization needs, maintaining a consistent level of protection. @ease creates softer feeling water that’s virtually free of chemical odors since the system works with up to 75% less chlorine.
Here’s how it works:
Simply set the dial on the pre-filled cartridges and insert them into the convenient holder, where they fit out of sight in the spa’s plumbing system. The @ease SmartChlor cartridge slowly releases chlorine to sanitize, and the mineral cartridge releases minerals that help balance the pH, condition the water and keep it feeling soft. SmartChlor cartridges last up to four weeks; mineral cartridges last up to four months; shocking is reduced to once a month. While standard chlorine dissolves quickly with spa use, SmartChlor is self-regulating. The system maintains a consistently low free chlorine level between 0.5 to 1.0 ppm at all times, thus avoiding the “yo-yo” effect that comes with standard Dichlor systems. And it can use up to 75% less chlorine. Simply set the dial on the cartridges and insert them into the spa. The release of chlorine and minerals is automatic so there is no guesswork. Use with optional FreshWater® III CD-Ozone system for the ultimate in water care on Hot Spot Spas.
What are the Main benefits of using FROG® @ease® In-Line Sanitizing System?
- Kills bacteria using 75% less chlorine than traditional methods
- Kills bacteria two ways with chlorine and silver
- Reduces shocking to only once a month
- SmartChlor cartridges last up to four weeks, depending on use
- Mineral cartridges last up to four months, or whenever you drain your spa
- Simple one-color @ease Test Strips makes reading chlorine levels easy
- No chlorine smell or faded swimwear
- No need for daily or weekly maintenance