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Alternative Sanitizers
for Hot Tubs & Spas
 SpaCyclopedia IndexSalt Systems Buy Cleanwater Blue or Nature 2 Alternative Pool Sanitizers

If you're currently using a conventional spa sanitizer such as bromine, and are happy with it, we won't suggest a change. But for those looking for an odor-free, yet highly effective alternative spa purification system, Cleanwater Blue or Nature2 may be perfect for you. Going chlorine or bromine free has never been easier!

Cleanwater Blue System

Cleanwater Blue alternative bactericide algicide for hot tubs EPA Registered Algaecide/Bactericide

Cleanwater Blue is the easy-to-use, healthy alternative water purifier. It works without the chemical odor, and with none of the irritation that can sometimes be caused by chlorine or bromine in hot tub water. Very economical-- lasts the typical user 5 months or more.

A great choice for achieving sparkling clear, pure, clean water in any hot tub spa! The natural copper-ion formula is the odorless alternative to harsh smelling spa chemicals. The complete Cleanwater Blue System includes the companion products: Cleanwater Prep calcium sequestrant and Cleanwater Purge compatible scale & metal inhibitor.

Copper - Nature's Mineral Purifier

Copper is nature's water purifier Copper has been used since ancient times to help keep water fresh. Copper was a preferred metal for storage vessels. American settlers crossing the plains put copper pennies in water barrels to inhibit stagnation, although no one really understood why it worked.

Cleanwater Blue provides a new, advanced way to use this time-proven copper-ion purification technology. Specially bonded with an exclusive proprietary carrier agent, CW-286, Cleanwater Blue achieves much higher effectiveness than other similar products. Read the Cleanwater Blue White Paper for more info.

Safe and Effective

The alternative to chlorine or bromine. Cleanwater Blue kills bacteria & algae by introducing a copper ion into the water. This mineral disrupts the cell structure and chemical makeup of these organisms, eliminating them in a way that is non-toxic to people or pets!   Copper ion kills bacteria and algae

Safe to use: the amount of copper that Cleanwater Blue introduces at the ecommended dosage is actually lower than the EPA drinking water standard for copper! Now your hot tub water is more natural, non-irritating, non-allergenic, and odor-free. You'll love how smooth the spa water feels on your skin.

Safe for your family No more ruined hair, bleached swimsuits, dry skin, or red eyes - just cleaner, fresher, better feeling water! Cleanwater Blue is better for you and your family, and easier on your spa's equipment system. Best of all, it requires a lot less maintenance than other systems. No need for daily, or weekly water testing-- test just twice a month!

Easily Tested

Copper ion 3-way test strips Use 3-Way Copper Test Strips are for testing Cleanwater Blue in your spa. Measures the Purifier Level (copper), plus Total Alkalinity (TA) and pH, to allow you to easily and correctly balance your spa water using these products. One bottle tests your spa for about a year!

Special Deal

Costs less to use than other sanitizers! Order the Cleanwater Blue Pro Starter Kit and get the complete Cleanwater Blue system and all the water balance chemicals and other products you need at a special introductory price!


Nature2 Spa Purifier

Nature two natural spa purifier Nature 2 is a water purification technology for spas that gives the purest, clearest water imaginable, with virtually no odor. It works using a silver catalyst to kill microorganisms. Lasts 4 months. From Zodiac.

Less harsh chemicals are needed to keep your hot tub water sparkling clean. You'll experience no red, burning eyes, irritated skin or discolored hair, while of sanitizer automatically.


The Nature2 spa purifier is installed inside your hot tub's filter cartridge.  It works on both pressure and suction type filtration systems and is suitable for spas up to 500 gallons.  Your spa should be circulated a minimum of 4 hours daily to be effective. Easy installation of Nature 2

NOTE: Your filter cartridge must be at least 8" long, and have a hole diameter of at least 1 1/4" to accept the Nature2 purifier cartridge. For spas with smaller filters which will not accept the Nature2 cartridge, try Cleanwater Blue liquid (described above).  It is a great choice.

Order the Nature2 Pro Starter Kit and get the Nature 2 cartridge and all the water balance chemicals and other products you need at a discounted price.

Nature2 CF cartridge sanitizer

Nature2 for Pools

Swimming pool owners can also enjoy the benefits of Nature 2! Greatly reduces the required chlorine residual down to 0.5 ppm while ensuring crystal clear pool water.

Choose from the Nature2 CF for cartridge filter systems, or the in-line Nature2 Express which works on all filtration systems including sand and DE filters. (Express versions available for in-ground and above-ground pools).

Nature2 Express for Pools

spa customers write  Consumer Reviews
Cleanwater Blue System
"I just wanted to let you know how satisfied I am with your products.  We are fortunate to have a weekend home in the mountains of Arizona.  Sometimes we aren't able to go there for long periods of time.  We leave [our spa] filled and running on an auto timer so when we are able to visit, the spa is ready to use.  We left it for three weeks and when we returned, I expected to find the water cloudy as was usually the case.  To my amazement, the water was clear as a bell... no odor, what more could you ask for.  Along with that, it is very economical.  Thank you folks at The Spa Depot for your prompt and courteous dealings with me."

Herman Dorum
Mesa, AZ

Spa Depot, The, Spas & Hot Tubs - Dealers, Olympia, WA

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