Arctic Pure Water Care

Arctic Spas® exclusive spa chemical line – Arctic Pure®

Arctic-Pure-new-HIRESArctic Spas® authorized dealers can provide a full line of Arctic Pure® chemicals for your spa. Using the approved Arctic Pure system ensures that your chemicals are economical, filler and additive – free and give greater consistency to your water maintenance program. Be sure to ask for Arctic Pure water treatment products to maximize the life of your hot tub.

The Truth About Hot Tub & Spa Chemicals

You likely don’t need about 50% of the spa and hot tub chemicals you are told to buy. Why? Hot tub chemical manufacturers want you to buy more chemicals. At Arctic Spas our policy is to only sell you what you need; we want you to spread the word that we’re the best place to shop for hot tub and spa products!

The detergents you need to use if your hot tub uses traditional paper filters are a great example of how chemical usage can be reduced with the right set of products.  If you use a traditional paper pleated filter it needs to be cleaned with a detergent every couple weeks or so. If you forget to clean it, the water can get cloudy because the filter is not filtering properly. The wrong solution is to use a water clarifier. Water clarifier is a silicone based liquid that makes particles stick together so the water appears clear for a few days.

The cloudiness quickly comes back and more clarifier is needed unless something else is done. The better solution is to stop using a pleated paper filter and switch to a disposable DEPTH style filter. Depth filters trap a much smaller size particle and hold much more material than a thin paper filter. This will totally eliminate the need for filter cleaner and clarifiers, just by switching to a better filter. (And, no more cleaning dirty filters, just throw it in the recycle bin!). Less chemical, less cleaning, cleaner water. Perfect.

Chemical Free Hot Tubs – The Truth

Technically, the only chemical free hot tubs are ones that are drained after each use.

However, new technology has enabled hot tubs to come very close to being chemical free. Salt water hot tub systems such as the Onzen™ Natural Salt Water Care System from Arctic Spas come very close to eliminating traditional chemical use. Salt water systems use low levels of salt dissolved in the water to generate sanitizing agents within the hot tub plumbing. This automated system eliminates the use of traditional chlorine or bromine tablets, and reduces the amount of time needed to maintain safe clean hot tub water. All Arctic Spas models can be fitted with the Onzen salt water system.

Natural Hot Tub Chemicals – Really?

There are dozens of products that claim to be natural hot tub chemicals, but many are not what they claim. Ozone, silver ions, copper ions, enzymes, hydrogen peroxide, and hydroxyl radicals are just a few of these. Some of these substances are effective hot tub sanitizers but it depends on how they are used and how much they cost. Natural hot tub chemicals and traditional products are available at all Arctic Spas stores. We also offer a very advanced water treatment system that utilizes salt water and ozone to keep the hot tub water safe and crystal clear. We call it the Onzen™ Natural Salt Water Care System.

Basic Hot Tub Water Maintenance

There are three fundamental areas of water maintenance. They are (1) Water Filtration, (2) Water Sanitation, and (3) Chemical Balance/pH Control.

Although your spa’s filter system is working several hours a day to remove particles from your water, it does not remove bacteria or viruses. Water sanitation is the responsibility of the spa owner. It can be achieved through the regular and periodic (daily, if necessary) addition of an approved sanitizer. The sanitizer will chemically control the bacteria and viruses present in the spa water.

Bacteria and viruses can grow quickly in under sanitized spa water. The water’s chemical balance and pH control are also the responsibility of the spa owner. You will have to add chemicals to maintain proper levels of Total Alka- linity (TA), Calcium Hardness (CH) and pH. Proper water balance and pH control will minimize scale buildup and corrosion of metals, extend the life of the spa, and allow the sanitizer to work at maximum efficiency.

Methods For Testing The Spa Water

Accurate water testing and analysis are an important part of effectively maintaining your spa water. To follow the Arctic Spas® recommended program, you must have the ability to test for:

• Total Alkalinity (TA)
• Calcium Hardness (CH) • pH
• Sanitizer

Although reagent liquid test kits provide the highest level of accuracy, Test Strips are the most conve- nient testing method used by many spa owners. Keep in mind that test strips are susceptible to heat and moisture contamination, which will result in inaccurate readings. Very high sanitizer levels will also render test strips unreliable.

The Arctic Pure® Water Maintenance Program

Following the Arctic Pure® water maintenance program will save you time and frustration and ensure clear, clean spa water.

Remove Excess Minerals

Most tap water has minerals such as Calcium, Copper, Iron, Manganese and Sodium in it, and the circulation of water can cause the erosion of metals from spa equipment which can present possible scaling and staining problems in your spa. Cases of source water with high minerals (such as some well water):

  1. We recommend you add 3 1/2 tablespoons (48 grams) of Arctic Pure® Best Defense per 1000 litres (265 gallons) of water while filling your spa.
  2. Also, as water evaporates from your spa and new water is added, the amount of dissolved minerals will increase. The spa water may eventually become “hard” (Calcium Hardness too high) enough to damage the heater by calcifying its surface. To protect against these problems add 1 tablespoon (14 grams) per 1000 litres (265 gallons) of Arctic Pure® Best Defense weekly.

Balance the Total Alkalinity (TA)

  1. The recommended Total Alkalinity (TA) for your spa water is 80-120 ppm.
  2. Total Alkalinity is a measure of the total levels of carbonates, bicarbonates, hydroxides, and other alkaline substances in the water. TA is referred to as the water’s “pH buffer”. In other words, it’s a measure of the ability of the water to resist changes in pH level.
  3. If the TA is too low, the pH level will fluctuate widely from high to low. Fluctuations in pH can cause corrosion or scaling of the spa components. Low TA can be corrected by adding Arctic PureTM Perfect Balance.
  4. If the Total Alkalinity is too high, the pH level will tend to be high and may be difficult to bring down. The pH can be lowered by using Arctic Pure® Adjust Down.
  5. Once the TA is balanced, it normally remains stable, although some sanitizers, and the addition of more water with a high or low alkalinity will raise or lower the TA reading of the water.
  6. When the Total Alkalinity is within the recommended range, proceed to the next step.

Balancing the pH

1. We recommended a pH range for your spa water of; 7.2-7.6.
2. The pH level is the measure of acidity and alkalinity. Values above 7 are alkaline; those below 7 are acidic.

Maintaining the proper pH level is extremely important for:

  • Preventing cloudy or odorous water.
  • Optimizing the effectiveness of the sanitizer.
  • Maintaining water that is comfortable for the user.
  • Preventing equipment deterioration.

3. If the spa water’s pH level is too low, the following may result:

  • The sanitizer will dissipate rapidly.
  • The water may become irritating to spa users.
  • The spa’s equipment may corrode.

If the pH is too low, it can be increased by adding Arctic Pure® Adjust Up to the spa water.

4. If the pH level is too high, the following may result:
• The sanitizer is less effective.
• Scale will form on the spa shell surface and the equipment. • The water may become cloudy.

If the pH is too high, it can be decreased by adding Arctic Pure® Adjust Down to the spa water.

It is important to check the pH on a regular basis. The pH will be affected by the bather load, the addition of new water, the addition of various chemicals, and the type of sanitizer used.

When the pH is within the recommended range, proceed to the final step.

Calcium Hardness (CH)

1. Most spa manufacturers recommend a Calcium Hardness (CH) level for your spa of 150-200 ppm. However, we do not recommend adding calcium to your spa if your spa water is above 100 ppm, or if your incoming water has a very low level of calcium hardness.
2. Calcium Hardness is a measure of the total amount of dissolved calcium in the water. It is believed that calcium helps control the corrosive nature of water. Calcium has a tendency to precipitate (fall out of suspension) in high temperatures and high pH levels.
Warning: When calcium falls out of suspension it can collect on the heater and pump, and shorten their life.
3. Any natural corrosiveness in the water can be combated by maintaining a slightly higher Total Alkalinity Level.

Sanitize the Spa

Sanitizer is extremely important for killing algae, bacteria and viruses, and preventing unwanted organ- isms from growing in the spa. At the same time, you don’t want too high a sanitizer level, or it can irritate your skin, lungs and eyes.

  1. Always maintain the sanitizer level in your spa at the recommended level for each type of sanitizer.
  2. We recommend the following Arctic Pure brand sanitizers:
  • Chlorine Tablets
  • Refresh
  • Boost


  1. Add pucks to floating dispenser and open to setting 4.
  2. Add 7 tablespoons (100 grams) of Arctic Pure® Refresh per 1500 litres (396 gallons) of water.
  3. Add 1 tablespoon (14 grams) of Arctic Pure® Spa Boost per 1000 litres (265 gallons) of water.
  4. Test the Chlorine level. Once the chlorine reads within the ideal range (1-3 ppm) turn tablet dispenser down to 1 – 2 (more or less according to bather load).


  1. Add pucks to floating dispenser and reset the setting if necessary.
  2. Add 7 tablespoons (100 grams) of Arctic Pure® Refresh per 1500 litres (396 gallons) of water.
  3. Wait at least one hour and add 1 tablespoon (14 grams) of Arctic Pure® Best Defence per 1000 litres (265 gallons) of water.

Find a store near you that stocks Arctic brand hot tub chemicals, here.

Read and download any of our manuals that include a complete hot tub water treatment guide, here.