Clorox Pool & Spa Alkalinity Increaser – Outdoor Backyard Pool Care, Raises Low TA and Stabilizes pH
Clorox Pool & Spa Alkalinity Increaser – Outdoor Backyard Pool Care, Raises Low TA and Stabilizes pH
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Why you'll love it
- Trusted Clorox brand name reduces risk when handling pool chemicals
- Quick-dissolving granulated formula makes application simple without waiting hours
- Prevents costly corrosion of heaters, pumps, ladders, and other metal pool equipment
- Reduces swimmer complaints about red, burning eyes and dry, itchy skin
- Free Clorox Pool App provides expert dosing guidance so beginners avoid over- or under-treating
- Pack of 3 bulk option covers a full season at lower per-use cost
Perfect for
- Raising total alkalinity in a pool after a water test reveals low TA levels
- Stabilizing pH in a newly filled or freshly refilled pool before adding chlorine
- Routine seasonal pool balancing to prevent pH drift and equipment damage
- Preventing eye and skin irritation for swimmers during regular use
- Bulk seasonal maintenance using the Pack of 3 to cover an entire swim season
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 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, 5LB (Pack of 1);12005CLX.Global Trade Identification Number: 00810821023085
Number of Items: 1
Item Type Name: Alkalinity Increaser, 5 lb.
Item Form: Granular
Product Benefits: Corrosion,Alkalinity Increaser,Skin Irritation
Item Weight: 5 pounds
Frequently Asked Questions
Will this alkalinity increaser hold up in an outdoor pool exposed to direct sun all day?
Yes. Clorox Pool & Spa Alkalinity Increaser is a granular sodium bicarbonate formula that is designed for open-air pools and is unaffected by sunlight. Because sunlight lowers free chlorine but not total alkalinity, keeping TA in the recommended 80–120 ppm range with this product is exactly how outdoor pool owners prevent the rapid pH drift caused by UV, heat, and heavy bather loads.
Can I use this product at my vacation rental's outdoor pool between guest stays?
Absolutely. The 5 lb resealable tub stores easily in an equipment shed and is fast to apply, so property managers can test the water, dose, and rebalance in under an hour between turnovers. Hosts managing a high guest-turnover pool often choose the Pack of 3 to keep a season's worth of alkalinity treatment on hand.
Is the container weather-safe to leave on an open pool deck?
The resealable tub is best stored in a dry, covered spot like a pool equipment shed, garage, or shaded deck box. The granules themselves are unaffected by outdoor temperatures, but keeping the lid tightly sealed prevents moisture from clumping and keeps the product effective for outdoor use across an entire swim season.
How is this different from alkalinity products made for indoor pools only?
Clorox Pool & Spa Alkalinity Increaser works equally well in indoor and outdoor pools, but outdoor pools face much wider pH swings from sun, rain, and temperature changes. This product is specifically designed to keep total alkalinity stable so outdoor water resists those swings and protects exposed metal like ladders, rails, and heaters.
Will rain wash this treatment out of my outdoor pool after I apply it?
Total alkalinity is a measure of dissolved bicarbonate in the water, and rain dilutes it rather than washes it out. If you experience heavy rain, retest your TA and reapply as needed. Many outdoor owners use the Clorox Pool App after a storm to get a personalized top-up dose.
How do I use Clorox Pool & Spa Alkalinity Increaser step by step?
1. Test your pool water to confirm total alkalinity is below 80 ppm. 2. Calculate the correct dose using the Clorox Pool App or the chart on the label based on your pool's gallonage. 3. With the pump running, broadcast the granules evenly across the deepest part of the pool. 4. Allow the pump to circulate for at least one hour, then retest TA. 5. Repeat if needed, and only then move on to pH and chlorine balancing.
How much do I add to raise alkalinity in my pool?
The general rule is 1.5 lbs of Clorox Pool & Spa Alkalinity Increaser per 10,000 gallons to raise total alkalinity by about 10 ppm. Always confirm with the Clorox Pool App for your exact pool size and current TA reading so you do not overshoot.
How long after adding alkalinity increaser can I swim?
You can usually swim within 1 to 2 hours after the product has fully dissolved and the pump has circulated the water. Always retest before swimming to confirm TA and pH are in the recommended ranges.
Is this product compatible with liquid chlorine sanitizers?
Yes. Clorox Pool & Spa Alkalinity Increaser is fully compatible with pools that use liquid chlorine, chlorine tabs, salt chlorine generators, and most other common sanitizing systems. It contains no ingredients that interfere with any sanitizer type.
Does it work with saltwater pools?
Yes. Saltwater pools still require balanced total alkalinity to keep pH stable, and this product works the same way in salt cells as it does in traditional chlorine pools. In fact, saltwater pools tend to drift in pH faster, making regular TA maintenance even more important.
What is included in the package when I order it?
You will receive a 5 lb resealable tub of Clorox Pool & Spa Alkalinity Increaser, or three 5 lb tubs if you select the Pack of 3 option. No additional accessories are required, just a pool test kit, which is sold separately and available anywhere pool chemicals are sold.
Are there any safety concerns I should know about before using this product?
Always wear gloves and avoid inhaling dust when handling. Never mix this product with any other pool chemical, especially acids or chlorine products, as dangerous reactions can occur. Store the sealed tub in a cool, dry, ventilated area away from children, pets, and incompatible chemicals.
How long does a 5 lb tub last under normal use?
For a typical 15,000-gallon residential pool, a 5 lb tub provides multiple alkalinity treatments across a full swim season. Pools that reflood, have heavy rain exposure, or see high bather loads may need more frequent dosing, which is why the Pack of 3 is a popular option for season-long coverage.
What is the difference between alkalinity increaser and pH increaser?
They are related but not interchangeable. Total alkalinity is the buffer that keeps pH stable, while pH is the actual measure of acidity. You should always adjust alkalinity first to the 80–120 ppm range, then fine-tune pH. Using a pH increaser without first raising alkalinity will lead to constant pH swings, which is why a dedicated alkalinity product like this one is the correct first step in any balancing routine.
