The ACE® system contains a special diamond electrode that automatically creates five different powerful and effective cleaners for your hot tub from just a small amount of salt and your spa’s water. When the diamond electrode is energized, it breaks apart water molecules to create active oxygen. Active oxygen is one of the world’s most effective natural cleaners and is the first way the ACE system automatically cleans the water. The active oxygen then combines with salt and other elements in the water to create chlorine and three other powerful oxidizers.

ACE® Salt Water System

Experience the Best Spa Water Possibleace_logo

 The Difference Is in the Diamonds

“It’s a wonderful spa. I love the ACE system, too. I never have that “chlorinated” smell on me after I get out, and my skin feels smooth, not dried out or itchy.”

Happy Customer

Hot Spring Owner


Traditional Chlorine

Most spas and hot tubs are maintained using traditional chlorine water care. Chlorine is an approved product to sanitize spas and hot tubs. Chlorine will combat bacteria and contaminants in the spa, and provide you with peace of mind that spa water is clean and safe. However, bottled chlorine can leave spa owners with a number of unappealing side effects. With the ACE system there is only a very small amount of bottled chlorine added to the spa, eliminating these side effects.

Eliminating Byproducts

When chlorine attacks contaminants in the spa water, it results in the creation of chlorinated byproducts, or chloramines. The chloramines are what generally cause the strong chlorine odor and irritating side effects that are often associated with hot tubs. The ACE system cleans the spa water differently. The Active Oxygen breaks down contaminants completely, eliminating those byproducts that impact the quality of spa water.

Minimizing Stabilizing Acid

Bottled chlorine also contains an acid, which is necessary to stabilize the chlorine. With traditional water care, bottled chlorine is added to the spa at a minimum of once a week, and in many cases with each use – which could be daily. Each time the bottled chlorine is added, the spa owner is inadvertently adding more acid to the spa water. The increasing level of acid in the spa water also contributes to the dry skin, red eyes, and irritation that some people experience from spa water. 


With easy to care for spa water that looks, feels and smells great, you’ll spend more time in a Hot Spring® spa.

With easy to care for spa water that looks, feels and smells great, you'll spend more time in a Hot Spring® spa.
Overview of the ACE® System

Overview of the ACE® System

The ACE® salt water sanitizing system automatically generates powerful cleaners to improve your hot tub ownership experience. The ACE system makes water care easy, provides better quality water, and with proper care, allows spa water to last much longer than with traditional water care – up to 12 months*.

Watch the video to learn more



The ACE system cleans spa water differently than any other salt water system, or any traditional water care program. The ACE system uses a patented diamond electrode, which allows the system to break apart water molecules and create a powerful oxidizer called Active Oxygen.

Active oxygen goes to work to breakdown and remove bacteria and impurities in the spa water completely and leaves behind only water and carbon dioxide.

Once the water is clean, then the active oxygen will pair with sodium chloride (salt) that has been added to the water to create the natural chlorine sanitizer.

Since the ACE system will only produce chlorine after the spa water is clean, it may take a day (or longer) to see a measurable amount of chlorine on your test strip. If you do not get a chlorine reading, that is an indication that the ACE system is hard at work cleaning the water.


You won’t feel like you need to take a shower after using your spa, which means you will use it much more. The more you use your Hot Spring® spa, the better you will feel!
~Hot Spring

Have questions about your Hot Spring spa or ACE system?

Rocky Mountain Pools and Spas always endeavours to be an excellent resource, call us and we will freely answer all your questions at 403.243.6667

Caring For Your Spa Water

The ACE® system makes spa ownership simpler by reducing the amount of time needed to care for your spa water. Caring for your spa water with the ACE system consists of:

  • Balancing spa water at start-up
  • Testing weekly to ensure water remains balanced and the chlorine level is within the recommended range
  • Conducting the 30-day check up
  • Cleaning the cell every 90 days

Watch these how-to videos to learn everything you need to know about caring for spa water using the ACE system. Read about how to care for your Ace salt water system. Read the frequently asked questions!          How-To Care for Your Spa Water  

Make It Better Easily

  • Using advanced technology, the ACE Salt Water System automatically generates chlorine and other cleaners for a set amount of time each day, based on your input and frequency of use. The ACE system is sanitizing your spa water, even when you haven’t given water care a thought.

Save Your Time On Maintenance

  • Choosing the ACE system, means you’ll spend less time caring for your water and more time enjoying your spa in the company of your favor. Plus, with proper care, you will add fewer bottled chemicals helping spa water and equipment last longer.

Your Senses, All of Them Will Thank You

  • The ACE system cleans water differently than traditional water care systems, you are less likely to experience dry skin, irritated eyes, or nasty chlorine odor. With softer, finer and more luxurious spa water, you’ll find you spend more time in your Hot Spring spa.