Clorox Pool&Spa Swimming Pool pH Up 4LB, Kid-Friendly Balanced Water for Worry-Free Family Pool Days
Why you'll love it
- Trusted Clorox Pool&Spa brand backed by a companion testing app for accurate dosing
- Prevents the painful red-eye and itchy-skin experience for swimmers of all ages
- Extends the lifespan of costly pool equipment and surfaces by stopping corrosion
- Granular form dissolves quickly and is easier to measure than liquid alternatives
- Reduces overall pool maintenance time by keeping water in the ideal range
Perfect for
- Raising low pH levels in pool water to restore balanced chemistry
- Preventing eye burning and skin irritation during swimming
- Protecting pool heaters, pumps, and surfaces from corrosive low-pH water
- Routine seasonal pool opening and water balancing
- Quick corrective treatment after heavy rain or acid-rain events that lower pH

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.
Restores Neutral pH
Balances pool water to restore neutral pH.
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
Maintain pH between 7.2 and 7.6. Apply a pH increaser or decreaser as needed.

Product Information
Raises Low pH: Clorox Pool&Spa Swimming Pool pH Up is formulated to elevate the pH levels in swimming pool water. By increasing pH levels, it helps in restoring water parameters to their ideal ranges, ensuring a balanced and healthy swimming environment.
Improves Swimmer Comfort: This product plays a crucial role for swimmer comfort, as it prevents eye and skin irritation caused by low pH. It aids in preventing dry, itchy skin and red burning eyes for 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.
Preserves Pool & Equipment - Unbalanced water can cause a corrosive environment that damages your pool surfaces or equipment. This product reduces pool maintenance, extending the life of your pool's cleanliness.
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 pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1);12104CLX.Number of Items: 1
Item Type Name: pH Up, 4 lb.
Item Form: Granular
Product Benefits: Corrosion,Ph Increaser
Item Weight: 4 pounds
Frequently Asked Questions
FeatureToBenefit: Will this help stop my kids from getting red, stinging eyes in the pool?
Yes, eye sting in pools is most often caused by low pH. Raising pH into the 7.2 to 7.8 range with this product is the single most effective way to make water comfortable for children.
FeatureToBenefit: Does fast-dissolving granular matter for a family pool that gets used every afternoon?
Yes, kids do not want to wait a full day to swim. The granules dissolve quickly, so you can treat in the morning and have the pool swim-ready by the time the kids get home.
FeatureToBenefit: Is the 4-pound resealable container easy to put away from curious hands?
Yes, the resealable lid lets you close the container completely and store it on a high shelf or in a locked pool chemical area, out of reach of young children between treatments.
FeatureToBenefit: Can the Clorox Pool App tell me the right dose so I do not accidentally over-treat for the kids?
Yes, the app personalizes dosing to your exact pool size and current readings, which removes the guesswork parents often worry about when balancing water for small children.
FeatureToBenefit: Will balanced pH help with the itchy skin complaints my kids come home with?
Absolutely. Itchy, tight skin after swimming is a hallmark of low-pH water, and correcting pH usually clears it up within a treatment or two.
AngleBuyerIntent: Is this the right pH Up for a backyard pool used by toddlers and young kids?
Yes, in fact it is one of the most common use cases. The key is to keep pH in range so the water is gentle on young swimmers' eyes and skin, and this product is formulated specifically for that job.
AngleBuyerIntent: Will this help prepare the pool for a kids' birthday party or summer gathering?
Yes, test and balance the day before, dose with pH Up if needed, and retest the morning of the party. Properly balanced water makes a big difference in how comfortable a group of kids are in the pool.
AngleBuyerIntent: Can I use this for a small above-ground pool that my kids swim in daily?
Yes, the granular formula works in any residential pool, including above-ground models. Just follow the dosage for your specific gallonage using the Clorox Pool App.
AngleBuyerIntent: Is pH Up safer to keep around children than muriatic acid?
Yes, pH Up is a dry granular product that is significantly easier to store and handle safely than liquid muriatic acid, which is a strong acid that produces fumes and requires serious caution around kids.
AngleBuyerIntent: Will this help my sensitive-skinned child enjoy the pool again?
Yes, in most cases sensitive skin reactions in pools trace back to pH imbalance, and this product brings the water into the gentle range that is much kinder to delicate skin.
Comparison: Is pH Up better for kids' comfort than just shocking the pool more often?
Yes, shocking raises sanitizer levels but does not fix low pH, and high chlorine in acidic water is exactly what stings kids' eyes. pH Up corrects the actual cause of irritation.
Comparison: How does this compare to pH Down for a family with young swimmers?
pH Down and pH Up are opposites. If your test shows low pH, which is the most common issue in residential pools, pH Up is the correct product. Many parents keep both on hand and choose based on test results.
Comparison: Is this easier for a parent to use than hiring a pool service for pH issues?
Yes, for basic pH corrections this is a simple DIY job. Test, dose per the Clorox Pool App, run the pump, retest. Most parents handle it in under an hour without a service call.
Objection: Is it safe to add pH Up while the kids are still in the pool?
No, kids should be out of the pool while you add any chemical, and you should wait until the granules fully dissolve and the pump has circulated the water, usually a few hours, before swimming resumes. The Clorox Pool App will tell you when it is safe.
Objection: Could the granules be a hazard if my child finds the container?
Like all pool chemicals, this product must be stored sealed and out of children's reach, ideally in a locked area. Used as directed and stored properly, it is a routine pool-care product, but it is not a toy.
Objection: Will I really see a difference in my kids' pool experience?
Parents typically notice a clear change right away: fewer complaints of burning eyes, less itchy skin after swimming, and a much more comfortable experience for children of all ages, especially toddlers.
HowTo: How do I use Clorox Pool&Spa pH Up to raise the pH in my pool?
Test your water first, then calculate the dosage with the Clorox Pool App based on your pool's gallons and current pH reading. Broadcast the granules slowly in front of a running return jet with the pump running, allow the water to circulate for a few hours, and retest. Repeat in small doses if needed rather than adding it all at once.
HowTo: How often should I test and add pH Up during the swim season?
Test at least once or twice per week during regular use, and always test after heavy rain, a pool party, or a major water change. Add pH Up only when the reading falls below 7.2, following the Clorox Pool App's personalized dosage for your pool.
HowTo: Should I balance alkalinity or pH first when opening the pool?
Always balance total alkalinity first, then adjust pH. Alkalinity acts as a buffer for pH, so getting it into the 80 to 120 ppm range first makes pH adjustments with pH Up much more stable and long-lasting.
Compatibility: Is Clorox Pool&Spa pH Up compatible with the Clorox Pool App?
Yes, this product is part of the Clorox Pool&Spa system and works directly with the Clorox Pool App, which provides personalized dosage recommendations, tracks your test history, and helps you keep all your pool chemistry in balance.
Compatibility: Can I use this pH Up with chlorine, salt systems, and mineral pools?
Yes, pH Up is compatible with traditional chlorine, saltwater chlorine generators, and mineral sanitizer systems, and it does not interfere with any of the common residential pool sanitizers when used as directed.
Unboxing: What is in the box and do I need to buy anything else to use it?
The package contains one 4-pound resealable container of Clorox Pool&Spa Swimming Pool pH Up. To use it, you will also need a reliable pool test kit or test strips, and a smartphone with the Clorox Pool App is recommended for accurate dosing.
ConcernGeneral: Is it safe to swim in the pool right after adding pH Up?
You should wait until the granules have fully dissolved, the pump has circulated the water, and your retest confirms pH is in the 7.2 to 7.8 range. The Clorox Pool App will indicate when the water is balanced and swim-ready.
ConcernGeneral: How should I store the container between uses?
Keep the container tightly sealed, stored upright in a cool, dry, well-ventilated area away from acids, oxidizers, and direct sunlight, and out of reach of children and pets. A pool storage shed or equipment area is ideal.
CategoryComparison: What is the difference between pH Up and alkalinity increaser?
pH Up raises the pH of the water with minimal effect on total alkalinity, while an alkalinity increaser (typically sodium bicarbonate) raises total alkalinity and only modestly affects pH. For a pool with low pH but normal alkalinity, pH Up is the correct choice. For low alkalinity, you need an alkalinity increaser first to stabilize the water.