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Clorox Pool & Spa Alkalinity Increaser for DIY Pool Maintenance, 16LB Self-Testing Supply Companion

Clorox Pool & Spa Alkalinity Increaser for DIY Pool Maintenance, 16LB Self-Testing Supply Companion

Regular price $38.97 USD
Regular price $100.03 USD Sale price $38.97 USD -61%
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Why you'll love it

  • Trusted Clorox brand reputation extends from household cleaning into pool care
  • Granulated formula dissolves quickly and is easy to broadcast without clumping
  • One 16LB bag handles multiple treatments, reducing trips to the store
  • Prevents costly corrosion damage to heaters, pumps, ladders, and salt cell components
  • Works across all major pool types so households do not need a separate product
  • Companion app removes guesswork for owners who do not want to hire a pool service

Perfect for

  • Raise total alkalinity in residential pool water to stabilize pH
  • Balance pH after fresh fill, refill, or heavy rain to bring pool back to safe levels
  • Prevent skin and eye irritation for family swimmers during regular use
  • Protect pool heaters, pumps, and metal fixtures from acid-water corrosion
  • Use the Clorox Pool App to test water and receive personalized dosage recommendations

For Beautiful, Comfortable Water

Balanced pool water prevents skin and eye irritation, and extends the life of equipment by protecting surfaces from corrosion, scale and stains. Balancers help to restore water parameters to their ideal ranges.


Preserves Pool & Equipment

Protects pool equipment and surfaces from the effects of unbalanced water.


Protects Against Eye and Skin Irritation

Improves swimmer comfort by preventing dry itchy skin and red burning eyes.


Test Weekly

Your pool chemistry can change quickly. Test your pool water weekly to ensure your chlorine and pH remain within optimal swimming levels.


Brush & Clean

Brush, vacuum and skim water surface weekly to remove dirt and debris.


Balance Water

Ensure your water parameters are balanced to their ideal ranges for optimal swimmer comfort and surface and equipment protection.


Product Information
For Raising Total Alkalinity: The Alkalinity Increaser helps maintain balanced pH levels in your pool water. Proper alkalinity levels reduce the need for frequent maintenance, and our product's granulated formula is easy to apply and dissolves quickly.

Improves Swimmer Comfort: This product plays a crucial role in enhancing swimmer comfort by preventing eye and skin irritation caused by unbalanced pH. It helps prevent dry, itchy skin and red, burning eyes, ensuring a more pleasant swimming experience.

Protects Pool Equipment from Corrosion: By keeping your pool's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your swimming pool.

Perfect for All Pools: Clorox Pool&Spa Swimming Pool Chlorine Stabilizer is perfect for new pools, freshly refilled pools, saltwater pools, and pools that use liquid chlorine.

Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations.
Clorox Pool & Spa Swimming Pool Alkalinity Increaser, Keeps pH Balanced, 16LB (Pack of 1);12016CLX.Number of Items: 1
Item Type Name: Pool Total Alkalinity Increaser
Included Components: CLOROX Pool&Spa 12016CLX Pool Total Alkalinity Increaser
Item Form: Granular
Product Benefits: Prevents Corrosion, Protects Against Skin Irritation
Item Weight: 16 pounds

Frequently Asked Questions

Can I use the Clorox Pool App to tell me exactly how much to add?

Yes. Test your water with a strip or the app's process, enter the results, and the app generates a personalized dosage recommendation based on your pool size and current chemistry, which makes dosing fast and removes the guesswork.

How long does it take to test, dose, and get back to my day?

Most homeowners spend under 10 minutes from testing through application. Test, read the app recommendation, broadcast the granules, and run the pump. The whole routine fits easily into a morning or evening check-in.

Will the granules dissolve fast enough that I do not have to babysit the pool?

Yes. The fast-dissolving formula is designed to go into solution quickly with normal pump circulation, so you can dose, walk away, and come back to balanced water without standing over the pool waiting for it to mix.

Does this work with my existing poolside testing station setup?

Yes. If you already test from a poolside station with strips or a drop kit, simply add the alkalinity reading into the Clorox Pool App and follow the dosage guidance, no extra equipment required.

How does this help me avoid calling a pool service every week?

By handling alkalinity and pH yourself with this product and the app, you eliminate the most common reason homeowners hire weekly service. Most pool chemistry problems start with alkalinity, and this product solves that root cause.

Can I store the bag in my garage pool supply area alongside other chemicals?

Yes, the 16LB bag stores well in a dry garage supply area. Keep it sealed and stored off the floor, and it will stay effective and easy to grab whenever your testing routine calls for a dose.

Is this product compatible with a drop-based test kit, not just strips?

Yes. Whether you use test strips, a drop titration kit, or the Clorox Pool App, the alkalinity target is the same: 80 to 120 ppm. This product raises alkalinity to that range regardless of which testing method you prefer.

How does this compare to hiring a pool service for alkalinity management?

A pool service charges per visit, and most of those visits adjust alkalinity and pH. With this product and the app, you can do the same task in minutes for the cost of a single bag, and you keep full visibility into your own water chemistry.

How does alkalinity increaser compare to all-in-one pool products for productivity?

All-in-one products add several chemicals at once and often over-treat. Targeted alkalinity increaser, used when testing shows a need, is more efficient, less wasteful, and keeps you focused on the actual problem your water has.

Will I still need other chemicals, or does this handle everything?

You will still need sanitizer (chlorine, salt, or alternative) and occasional pH adjusters. Alkalinity increaser is one part of a complete routine, but it is the foundation that makes every other chemical work more predictably and efficiently.

Can I dose this on my lunch break from the home office?

Yes. Test in the morning, dose when you have a free moment, and by the time you finish work your water is balanced. The routine is short enough to fit into a busy workday without interrupting it.

Does the 16-pound size mean fewer store runs and more free time?

Yes. One 16LB bag covers multiple treatments, so you spend less time sourcing chemicals and more time enjoying the pool. For most households, it lasts the majority of a single swim season.

Will the app remind me when to add more?

The Clorox Pool App tracks your test history and water trends, so you can see when alkalinity is starting to drift down and add product proactively, rather than reacting to a problem after the chemistry has already shifted.

Can I set up a weekly testing ritual with this product?

Yes. Many owners test the same day each week, log the results in the app, dose only what is needed, and move on. A consistent weekly ritual is faster and cheaper than emergency corrections after a chemistry crash.

How does this help me keep a low-maintenance pool routine?

Stable alkalinity means pH does not bounce around, which means fewer corrections, less wasted chemical, and fewer surprise issues. That is the core of a low-effort, high-results pool care routine.

Is there a learning curve for first-time DIY pool owners?

No. The combination of the Clorox Pool App, clear dosage instructions, and a fast-dissolving granular product means a new pool owner can learn the routine in a single weekend and feel confident within a few weeks.

How do I add Clorox Pool & Spa Alkalinity Increaser to my pool?

Test your water first to confirm alkalinity is below 80 ppm. Calculate your pool volume, then broadcast the recommended amount of granules evenly across the deepest end of the pool with the pump running. Allow the pump to circulate for at least 15 to 30 minutes, retest, and repeat if needed until alkalinity is in the 80 to 120 ppm range.

How much alkalinity increaser should I add per gallon of water?

A common guideline is roughly 1.5 pounds of sodium bicarbonate per 10,000 gallons to raise total alkalinity by about 10 ppm. Pool size, current alkalinity, and target level all matter, so use the Clorox Pool App for a personalized dosage based on your actual test results.

Can I add alkalinity increaser and chlorine at the same time?

It is best to add alkalinity increaser first and let it circulate and dissolve fully, then retest and add chlorine separately. Spacing the doses by 15 to 30 minutes prevents the chemicals from interacting and gives each one a chance to mix evenly throughout the water.

Is this product compatible with saltwater pools?

Yes. Sodium bicarbonate is fully compatible with salt chlorine generator systems and is in fact recommended for saltwater pools because stable alkalinity protects the salt cell and helps the generator run efficiently over a long service life.

Does this work with vinyl, plaster, fiberglass, and above-ground pools?

Yes. The product works with every common residential pool surface and structure, including plaster, vinyl liner, fiberglass, painted, and above-ground pools. It does not affect surfaces and is safe for all standard pool finishes when used as directed.

What is included in the 16-pound bag and what do I need to buy separately?

The package contains one 16-pound bag of granular sodium bicarbonate alkalinity increaser. You will need to supply your own test strips or test kit, a measuring cup or scale for dosing, and access to the free Clorox Pool App for personalized recommendations and tracking.

Is sodium bicarbonate safe to handle and store at home?

Yes, sodium bicarbonate is a food-grade compound that is safe to handle with normal care. Avoid breathing dust while pouring, keep the bag sealed and dry, and store it upright in a cool, dry location away from other concentrated pool chemicals and out of reach of children and pets.

Will this product expire or lose effectiveness in storage?

Sodium bicarbonate has a very long shelf life when stored dry and sealed. As long as the bag is kept closed and away from moisture, the product will remain effective for multiple seasons without losing potency.

What is the difference between alkalinity increaser and pH increaser?

Alkalinity increaser (sodium bicarbonate) raises total alkalinity, which then stabilizes pH with minimal pH change on its own. pH increaser (soda ash) raises pH directly with little effect on alkalinity. For stable, long-term water balance, raising alkalinity first is usually the correct order of operations.

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