Clorox Pool&Spa pH Increaser for Above-Ground and In-Ground Pools, 4LB Granular Formula for Outdoor Pool Care
Clorox Pool&Spa pH Increaser for Above-Ground and In-Ground Pools, 4LB Granular Formula for Outdoor Pool Care
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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: Does the granular form dissolve quickly enough to treat an outdoor pool without long downtime?
Yes, the granular pH Up is designed for fast dissolution, so you can broadcast it across the pool surface, circulate the water, and typically retest within a few hours rather than waiting a full day.
FeatureToBenefit: Will the 4-pound container hold up in a hot outdoor storage shed?
The resealable container is built for pool-shed and equipment-area storage; as long as the lid is tightened after each use and you keep it out of standing moisture, the granules stay dry and effective season after season.
FeatureToBenefit: Can I use this pH Up on an above-ground pool exposed to full sun all day?
Absolutely. Sun exposure actually tends to raise pH over time, so above-ground pools in direct sun often need pH Up during the season, and this product is formulated specifically for that residential pool environment.
FeatureToBenefit: Is it easy to carry out to the pool deck for routine outdoor treatments?
Yes, the 4-pound container is a manageable size for one-handed carry from the storage area to the pool, and the resealable lid means you can measure what you need and put the rest back without spills.
FeatureToBenefit: Does the resealable pack help when I only need a partial dose after a rain event?
Exactly. The resealable container is sized for multi-treatment seasonal use, so you can scoop out only what your Clorox Pool App recommends, seal the rest, and keep it fresh for the next adjustment.
AngleBuyerIntent: Is this the right pH Up for a backyard in-ground pool I maintain myself?
Yes, this is one of the most common DIY use cases. As long as you test with the Clorox Pool App or a reliable test kit and follow the dosage guidance, a homeowner can easily raise low pH and keep an in-ground pool properly balanced.
AngleBuyerIntent: Will this help my pool after an outdoor acid-rain event dropped the pH?
Yes, pH Up is the correct corrective product for low-pH water after acid rain. Test the water first, then dose according to your pool's gallons and current reading to bring pH back into the 7.2 to 7.8 range.
AngleBuyerIntent: Can I use this for seasonal opening when the pool water has gone acidic over winter?
Yes, many DIY pool owners keep pH Up on hand specifically for spring opening. After balancing alkalinity first, this product brings pH up to the ideal starting range for the swim season.
AngleBuyerIntent: Is the 4-pound size enough for a full outdoor summer season?
For most residential backyard pools, a 4-pound container provides multiple treatments across the season, though exact coverage depends on pool size, bather load, and rainfall. The Clorox Pool App can estimate your specific needs.
AngleBuyerIntent: Will this work in a pool that gets heavy outdoor use and debris?
Yes, organic debris and swimmer load both tend to push pH down over time, and pH Up is the standard treatment to bring it back into range regardless of how much use or debris the pool sees.
Comparison: How does granular pH Up compare to liquid alternatives for outdoor pool use?
Granular pH Up dissolves quickly when broadcast across the pool and is generally easier to measure and store for DIY outdoor maintenance, while liquids can spill, are heavier to ship, and often require more careful dosing.
Comparison: Could I just use baking soda from the grocery store instead of this product outdoors?
Baking soda raises total alkalinity more than pH, so it is not a direct substitute. Pool-specific pH Up like this one is formulated to raise pH efficiently without overshooting alkalinity, which matters for outdoor water balance.
Comparison: Is this better than aerating my pool to raise pH naturally outdoors?
Aeration helps but is slow and depends on weather, water features, and circulation. pH Up gives you a controlled, predictable correction in a single treatment, which is why most DIY pool owners keep it on the outdoor pool shelf.
Objection: Will adding pH Up to an outdoor pool cause cloudy water?
Not when dosed correctly. Cloudiness usually comes from adding too much at once or from poor circulation, which is why the Clorox Pool App recommends splitting doses and running the pump while the product dissolves.
Objection: Is granular pH Up safe to handle on a windy outdoor deck?
Yes, but broadcast it slowly in front of a running return jet so granules dissolve into the water rather than blowing around, and keep the container sealed between scoops to minimize dust on breezy days.
Objection: Will the 4-pound bag go bad sitting in my outdoor equipment area all season?
No, sodium carbonate-based pH Up has a long shelf life. As long as the resealable lid stays closed and the container stays dry, the product remains effective from one outdoor season to the next.
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.
