Why Choose pH PURE™?
1. Naturally Stabilizes pH Levels
pH PURE uses precise CO2 injection to maintain stable water balance without the need of muriatic acid, reducing chemical fluctuations and protecting pool surfaces.
2. Lower Chemical Costs & Maintenance
By eliminating the need for muriatic acid to balance the pH, pH PURE cuts chemical expenses and the hassle of handling harsh chemicals while saving you time and money.
3. Helps Stabilize Total Alkalinity Levels
pH levels remain stable 24/7, thus helping keep the total alkalinity levels from getting too low, thus eliminating sodium bicarbonate use.
4.1/5th the price of Muriatec Acid
- Not only with a piece of mind knowing the pH is in range, but you will also be saving considerable money by virtually eliminating the expense of high cost of dangerous chemicals.
5. Proven Eco-Friendly Technology
- The exact same technology has been used by major Waterparks around the world for decades and is now available for Residential Pools up to 50,000 gallons.
What is pH PURE™?
pH PURE is an advanced CO2 injection system built on proven technology. The unit is housed in a durable, weatherproof enclosure and engineered for a long-lasting performance. Designed to integrate seamlessly with you existing pool equipment, pH PURE safely delivers precise amounts of carbon dioxide into the water, basically performing the same chore that muriatic does.
The same technology has been used on large commercial pools and waterparks for decades and is now available for residential pools. The need to purchase muriatic acid for pH control is eliminated, and sodium bicarbonate use for total alkalinity use. Nobody likes having muriatic acid – the most hazardous chemical on the market – on their property – much less swimming in it. CO2 is 1/5th the cost!
How pH PURE™ Works
pH PURE uses precision CO2 injection to stabilize your pools pH levels naturally and safely. CO2 reacts the same way as muriatic acid does but without the hazardous chemicals!
As the CO₂ dissolves into the water stream, it forms a mild carbonic acid that gently stabilizes pH levels, dramatically reducing the need for traditional acid-based corrections. The result is safer, healthier, and crystal-clear water for swimmers, with less chemical exposure, lower maintenance demands, and longer equipment life. This eliminates the need for harsh chemical swings or constant manual adjustments.
Unlike traditional acid dosing, which can cause unstable pH fluctuations and equipment corrosion, pH PURE™ maintains a consistent water balance 24/7. The result is cleaner, healthier water with fewer chemicals, longer-lasting pool surfaces, and an easier, safer swimming experience.
How pH PURE™ Delivers Superior Water Balance
pH PURE™ uses precision CO₂ injection to stabilize your pool’s pH levels without harsh chemicals naturally. CO₂ dissolves into the water, forming a mild carbonic acid that gently balances pH, eliminating the rapid fluctuations caused by traditional acid treatments.
By maintaining consistent pH and total alkalinity, pH PURE™ protects pool surfaces, plumbing, and filtration systems from corrosion and scaling. The result is healthier, clearer water, reduced chemical costs, less maintenance, and a safer swimming experience.
Purchasing the pH PURE System
When purchasing the pH PURE System, you will need to either rent or purchase one or more CO₂ tanks depending on the size of your pool and the length of the pool season. When ordering pH PURE, you will need to specify the desired regulator you will need – either a single, double, or triple tank regulator.
Acquiring and handling a CO₂ tank is very similar to that of a propane tank. They are readily available everywhere in the USA.
If you elect to purchase a tank, you can order them online or purchase them at many locations in the United States. These locations also refill the tanks.
CO₂ refills are also widely available in sporting good stores, welding supply stores, paintball stores and restaurant supply stores. A simple Google search of “CO₂ tanks near me” will tell you where you can go.
Airgas is a top supplier of CO₂ tanks in the United States with nearly 900 locations. They also supply many independent stores in their areas with low-cost residential delivery available.
Clearwater Pool Systems will gladly assist you on tank sizing and location of where to acquire the tanks by contacting as at 1-800-756-7946.
Determining your pool size
Rectangular Pools
Length x Width x Average Depth x 7.5
Circular or Oval shaped Pools
Length x Width x Average Depth x 5.9
Average depth can be obtained by taking the depth of the deep and shallow ends and then dividing by two.
Determining the Proper CO₂ Tanks to Obtain
CO2 tanks come in 3 sizes – 20 lb., 35 lb., and 50 lb.
As a rule of thumb, a pool will use approximately 1/4 of a pound of CO₂ per 10,000 gallons a day. The actual amount could vary based on a few factors, but as a rule of thumb, this is accurate.
We recommend you rent at least one 50-pound tank from a local supplier in your area and have it delivered. Renting a tank and having it delivered is inexpensive and makes it easy on you as the homeowner for a virtual hands-off approach. The CO₂ is usually under a $1 a pound when filled to these sizes with delivery and tank rentals very reasonable in cost – all at a fraction of using muriatic acid.
1 – 50-Pound Tank / Days Between Refilling
Pool Size
10,000 Gallons = 200 days
15,000 Gallons = 150 days
20,000 Gallons = 100 days
30,000 Gallons = 75 days
40,000 Gallons = 50 days
Among factors to consider……
Calculate the Right CO₂ Tank Before You Buy
How long do you want to go between refills? You can easily calculate how many days you can go between refills by using this form:
Pool Volume
Cylinder Size
Approximate Months
Would you rather own the tanks? If so, you should consider getting multiple 20 or 35-pound tanks with 3 the maximum allowed with our system. The weight can be a factor on the larger size tanks when filled if you want to fill them yourselves. If you do go with delivery, it doesn’t matter if own the tanks or rent them.
Adding up all the factors, we recommend you rent at least one 50-pound tank from a local supplier in your area and have it delivered. Renting a tank and having it delivered is inexpensive and makes it easy on you as the homeowner for a virtual hands-off approach. The CO₂ is usually under a $1 a pound when filled to these sizes with delivery and tank rentals at a very reasonable in cost – all at a fraction of using muriatic acid. If your pool is over 25,000 gallons, you should consider renting two 50-pound tanks.
Compare
 | pH PURE
| Traditional Methods
|
|---|---|---|
| REQUIRES DANGEROUS HANDLING OF CHEMICALS? | NO | YES |
| REQUIRES CONSTANT MONITORING TO KEEP BALANCED? | NO | YES |
| REQUIRES MURIATIC ACID USE TO BALANCE THE PH? | NO | YES |
| REQUIRES BAKING SODA TO BALANCE THE TOTAL ALKALINITY? | NO | YES |
| KEEPS PH RELATIVELY STEADY ALL THE TIME? | YES | NO |
| KEEPS TOTAL ALKALINITY RELATIVELY STEADY ALL THE TIME? | YES | NO |
| EXPENSIVE TO OPERATE? | NO | YES |
| REQUIRES DANGEROUS CHEMICAL STORAGE? | NO | YES |
| IS IT DIFFICULT TO KEEP THE POOL BALANCED PROPERLY? | NO | YES |
| ALLOWS CHLORINE USE TO BE MOST EFFICIENT? | YES | NO |
| IDEAL FOR POOL BUILDERS DURING CURING TIME? | YES | NO |
pH PURE FAQ
What exactly is pH PURE?
pH PURE is a new product by Clearwater Pool Systems and injects CO2 (carbon dioxide) into the pool water to balance the pH and keeps the total alkalinity relatively steady. You can eliminate expensive muriatic acid use to control the pH. The system automatically balances the pool 24/7 with virtually no chemicals. When you add CO2 to the water, you are doing the same thing when you add muriatic acid. Which would you rather use?
Has this technology been used before?
Yes. For decades, CO2 has and continues to be used on commercial pools and waterparks all over the world. It is very economical compared to using muriatic acid and sodium bicarbonate (baking soda) to control pH and total alkalinity.
Is carbon dioxide (CO2) safe to swim in?
By the time it reaches the actual water in the pool, the CO2 is totally dissolved and completely harmless to swimmers. We exhale CO2 every time we breathe.
Will I still have to balance my pool and use muriatic acid?
Once you get the unit set on the proper setting, the pH and total alkalinity in the pool should remain very steady. Keep the pH 7.2-7.6 for best results. You will never have to use muriatic acid to balance the pH, but if the total alkalinity goes over 160 ppm, you would have to use some to lower it. However, our system does not affect total alkalinity and by eliminating muriatic acid, the total alkalinity will not go down – thus eliminating the use of sodium bicarbonate (baking soda).
How hard is it to install the unit?
Any Clearwater dealer, plumber or handyman would be able to install the system in under an hour.
Does a CO2 tank and CO2 come with the product?
No, you will have to get that locally as it would be cost prohibitive for us to ship the tank and illegal to ship CO2 itself without proper registration and restrictions in place. Getting a tank locally will almost be as easy as getting a propane tank filled up. They are available at welding shops, paintball, restaurant supply stores, and some sporting good stores. You can either purchase or rent the tanks. We strongly recommend you rent larger the large size tanks and have them delivered to you. There are several companies that offer this including Airgas which is nationwide. Welding shops can refill or exchange tanks and make the deliveries to you also. There is a chart on this site in the pH PURE section that can help you on determining the proper tank to use.
Will using this system save me money?
Depending on the market price of muriatic acid and sodium bicarbonate, using CO2 can be about 1/5th the cost vs. using muriatic acid. The cost of chemicals is astronomical.
How long is the warranty?
The pH PURE unit is covered for three years, except for the O-Rings, washers, electrical fuses and tubing which are subject to normal wear and tear and not covered by the warranty.