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There are two important advantages to our Blu Fusion Salt System over other forms of spa sanitation.

First, it uses bromine which is superior to both chlorine and biguanide.

  • Unlike chlorine:
    • Bromine is not dependent on pH precision to ensure its effectiveness in killing bacteria and other pathogens.
    • Bromine does not off-gas. Bromine is a liquid are spa temperatures.
    • Bromine is gentler to your skin.
    • It’s byproduct, bromamine, is also a strong sanitizer.
  • Unlike biguanide:
    • Bromine is also an oxidizer.
    • Bromine is much easier to use.
    • Bromine is compatible with most other spa chemicals.
    • Bromine prevents pink slime and white-water mold.

Second, Blu Fusion is the best way to use bromine in a spa. Blu Fusion does not introduce other chemicals to your spa and does not require you to remember to add bromine tabs every 7 – 10 days in order to maintain a proper bromine level in your spa.

Please see our Spa Sanitation in a Nutshell.

Technically, No. There is no such thing as a chemical-free sanitation system. Chemicals are required to both kill bacteria & other pathogens and remove biologic waste via oxidation.

That said, our Blu Fusion Automatic Bromine Generator uses only sodium bromide (a salt) and converts this to bromine (the sanitizer). No additional chemicals are needed to keep your spa water clear and clean.

Note also that the EPA approves ONLY three forms of sanitation in spas & hot tubs. These are based on either chlorine, bromine, or biguanide. All three are chemicals.

There are two primary sources of Sodium Bromide Salt (NaBr) in the world, Israel, and China. Though Israeli-sourced Sodium Bromide is often more expensive, we have a choice and, we’ve chosen to not source from China.

There are two principal reasons to drain & refill a hot tub every 3 – 4 months. One is a high level of Total Dissolved Solids (TDS). The other is high levels of cyanuric acid (CYA). Blu Fusion does not increase TDS and it does not use CYA.

Total Dissolved Solids (TDS)

TDS is exactly as it sounds. It essentially means more and more chemicals are being dissolved in your spa water.

With each weekly addition of chemicals to your spa, you are also increasing the TDS. As TDS rises it becomes increasingly difficult to maintain clear water, foaming becomes more prevalent, and pH control can also become more difficult.

Because you add our Dead Sea Sodium Bromide Salt only once, at the start of each annual cycle, your spa water does not experience a significant additional level of TDS.

Cyanuric Acid (CYA)

The most common method of spa sanitation is chlorine (probably because it’s so common for pool sanitation). And the most common chlorine regimen uses dichlor, which is roughly 50% chlorine and 50% cyanuric acid, or CYA.

Chlorine is much less stable than bromine in the warm water of a spa. CYA helps stabilize chlorine and extended the “life” of the chlorine as a spa sanitizer. Unfortunately, CYA also reduces chlorines efficacy in killing bacteria, and other pathogens. As CYA builds up, with each weekly application of dichlor, it further reduces the ability of chlorine to kill pathogens. Hence, you must replace your spa water every 3 – 4 months when using dichlor.

As a bromine-based sanitation system, Blu Fusion does not use cyanuric acid (CYA).

Honestly, the least expensive spa sanitation system is either a floater using Bromine Tabs or Dichlor (chlorine). However, over the life of your spa, they are not much less expensive, and both require more time and effort on your part, and both are more likely to result in unsuitable spa water when you forget to add chemicals once or twice a week.

Including your initial cost for our Blu Fusion Automatic Bromine Generator, over the 10-year life of your hot tub, our Blu Fusion Salt System will likely cost you around $400 annually. And the time & effort to maintain your spa will be considerably less than with other sanitation regimens.

Yes, it is. In fact, it’s about as green as you can get. Here’s the full story.

The bromine produced by our Blu Fusion Salt System is generate from the salt, sodium bromide (NaBr). It’s the bromine equivalent of sodium chloride (NaCl), more commonly known as table salt. And much like most sodium chloride, sodium bromide is produced through evaporation. It’s simply the sun drying up large pools of the very salty Dead Sea water.

The production of bromine from sodium bromide is done through electrolysis. It’s nothing more than a very low voltage electrical current passing through the spa water as it flows through the electrode cell. Now, it is a bit more complicated than this, hence the reason for the electronic controls but the electrical current is very low, and the voltage never exceeds 12V. In other words, it’s both green and very safe.

You can though, for several reasons, we recommend you have your registered BluWater Technology dealer install our Blu Fusion Salt System.

  1. Blu Fusion is not a good fit for inexpensive, low-quality spas and hot tubs.
  2. Proper water flow through the Blu Fusion electrode cell is critical to its proper performance
  3. Our 3-year warranty is only provided through our dealer network

Yes, there is a very convenient way to ensure the entire system is performing properly. Simply follow this procedure.

  1. Ensure your spa is in circulation (filtration) mode in order to ensure you have power going to your Blu Fusion system.
  2. Unlock your Blu Fusion display.
  3. Hold both the “Increase” and “Decrease” buttons down simultaneously for about 5 seconds.
  4. The Blu Fusion reading will change to something with a decimal in it. Ideally, you want a reading in the 1.0 – 1.4 range, with 1.2 being just right.

A reading in this 1.0 – 1.4 range indicates your Blu Fusion system is set up & operating properly.

Though we are using sodium bromide salt in your spa, the water will not taste salty. In fact, the water will feel silky smooth (unlike most spas) because of the salt, but the salt concentration is too low for you to taste. The threshold for humans to taste salt is around 3,500 ppm. The salt concentration in a Blu Fusion spa is around 1,700, or less than ½ what you can taste.

By the way, for comparison, the ocean salt concentration level is around 35,000 ppm, or around 20x greater than in your Blu Fusion hot tub.

It’s a valid question because your spa water, using Blu Fusion, will contain 3 – 5 lbs. of bromide salt. However, this concentration of salt is quite low, around 1,700 ppm, hence draining your spa out on to your lawn our other yard plants will not adversely affect them.

The sacrificial anode prevents “galvanic corrosion” and is used in all salt-system pools in order to prevent corrosion in the metal elements of a pool. It’s primary purpose with Blu Fusion is to protect your spa’s heater from corrosion.

Note, the heater is typically the most vulnerable part in your spa regardless of the method of sanitation. Our sacrificial anode simply provides an additional level of protection for your spa’s heater.

If the pH in your spa water has exceeded 7.6, calcium scaling can occur on the electrode elements inside the Blu Fusion electrode cell. This calcium scaling will appear as white deposits on the dark gray electrodes. This scaling can be easily removed with a mild acid. Store-bought vinegar is approx. 5% acetic acid and works very well.

Remove your electrode cell and place it in a 5-gallon paint bucket. Fill the paint bucket with vinegar covering the electrode cell. Depending upon the amount of scaling it may take 30 minutes to several hours to completely dissolve the calcium scaling.