Clorox® Pool&Spa™ Swimming Pool Chlorine Stabilizer for Saltwater Pools, UV-Proof Outdoor Pool Care, 4LB Pack
Clorox® Pool&Spa™ Swimming Pool Chlorine Stabilizer for Saltwater Pools, UV-Proof Outdoor Pool Care, 4LB Pack
Couldn't load pickup availability
Why you'll love it
- Trusted Clorox brand reputation in water care
- Granular form dissolves quickly and is easy to dose
- Specifically formulated for saltwater pools, a growing pool segment
- Reduces pool equipment corrosion and surface damage from unbalanced water
- Cuts down on chemical purchases by making chlorine last longer
- Bundled Clorox Pool App provides expert-level water testing and dosage guidance at home
Perfect for
- Extending the life of chlorine during hot, sunny summer months
- Reducing the frequency of chlorine reapplications in residential pools
- Protecting chlorine in saltwater pools from UV burn-off
- Stabilizing pool water chemistry at the start of swim season
- Lowering overall pool maintenance effort and chemical cost over time
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
Unbalanced water can cause a corrosive environment that can damage your pool surfaces or equipment.
Helps Chlorine Last Longer
Stabilizer protects chlorine and reduces the impact of sunlight on chlorine loss.
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 eqipment protection.
Product Information
Prolongs Chlorine Effectiveness: The Chlorine Stabilizer protects your pool's chlorine from the damaging effects of the sun's harsh UV rays, thereby making chlorine last much longer, allowing you to enjoy consistently clean and sanitized pool water.
Reduces Sun's Impact on Chlorine: This product minimizes the effect of sunlight on chlorine loss, protecting your chlorine from burning off. By using a chlorine stabilizer, you ensure longer-lasting sanitization, reducing the need for frequent product application to your pool.
Ideal for Salt Pools: Our Chlorine Stabilizer is particularly well-suited for saltwater pools. It offers reliable protection against the corrosive effects of sunlight on chlorine generated by salt cells.
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 Chlorine Stabilizer, Helps Chlorine Last Longer, Saltwater Pool Compatible, 4LB (Pack of 1);12004CLX.Global Trade Identification Number: 00810821023283
Number of Items: 1
Item Type Name: Chlorine Stabilizer, 4 lb.
Item Form: Granular
Product Benefits: Maintains Clean Sanitized Water
Item Weight: 4 pounds
Frequently Asked Questions
Will this chlorine stabilizer hold up in direct sunlight all day at my outdoor saltwater pool?
Yes. The cyanuric acid-based formula is specifically designed as a UV blocker, shielding chlorine from the sun's rays so it does not burn off quickly in open-air, full-sun backyard settings.
Can I use it in an above-ground saltwater pool that sits in a sunny, exposed yard?
Absolutely. It is fully compatible with saltwater pools, including above-ground setups, and works best in pools that receive heavy sun exposure where chlorine loss is most rapid.
Does the granular form dissolve well in outdoor pool water without clumping?
Yes, the fine granular format dissolves quickly when pre-dissolved in a bucket of pool water and added to the deep end, even in outdoor pools with strong surface agitation.
Is the 4LB container easy to store in an outdoor shed or pool house?
The 4LB tub is compact and sealed, making it easy to keep on a shelf in a covered outdoor storage area, as long as it is kept dry and away from direct moisture.
Will it help if I host outdoor pool parties and the water is in constant sun?
Yes. By locking in free available chlorine, the stabilizer keeps your sanitizer working during long, sunny days of heavy use and extended sun exposure.
Is this chlorine stabilizer good for a backyard saltwater pool I only use outdoors in summer?
Yes, it is ideal for seasonal outdoor saltwater pools. It is a top add at pool opening to protect chlorine right through the hottest months.
Do I need a different product if my outdoor pool is in a tropical, high-UV climate?
No. This stabilizer is especially valuable in high-UV regions where unprotected chlorine can lose up to 90% of its strength in a few hours of midday sun.
Can I carry it with me if I help maintain a relative's outdoor saltwater pool?
Yes. The 4LB tub is portable enough to transport, and the Pack of 3 option gives you enough supply to service multiple outdoor pools across the season.
Will it leave any residue on my pool deck if it spills outdoors?
The granules dissolve cleanly in water, and any dry spill on a deck can simply be swept up or rinsed away without staining most pool deck surfaces.
Does it work in an outdoor saltwater hot tub exposed to afternoon sun?
Yes. Hot tubs and spas using salt chlorine generators benefit from the same UV protection, and the granular form is easy to dose in smaller spa volumes.
Is this better than liquid chlorine for an outdoor pool that gets hammered by sun?
In high-sun outdoor pools, this stabilizer makes any chlorine source last dramatically longer, reducing how often you need to add liquid chlorine compared to using it without stabilizer.
How does this compare to a pool cover for protecting outdoor chlorine from the sun?
A cover blocks sun physically, but a stabilizer protects chlorine chemically whenever the cover is off and the pool is in use, making the two complementary rather than competing.
Is the plastic tub durable enough to survive being kept outside in a pool equipment area?
The container is made of sturdy, moisture-resistant plastic suitable for a covered outdoor storage spot, but for longest life we recommend keeping it in a dry, shaded location.
Will heat from outdoor summer temperatures reduce the stabilizer's effectiveness?
No. Heat does not degrade cyanuric acid, so it continues to protect your chlorine even during the peak of summer heat waves.
Can I use this in an outdoor saltwater pool that also has a waterfall or water feature in full sun?
Yes, and it is especially recommended since splashing and agitation in direct sun accelerate UV chlorine loss. The stabilizer counteracts that loss all day.
What if my outdoor pool gets a lot of debris from nearby trees, will the stabilizer still work?
Yes, the stabilizer's job is to protect chlorine from UV light, and it works independently of leaf load or debris. You will still need to skim and clean, but your chlorine will stay effective.
How do I add Clorox Pool Chlorine Stabilizer to my saltwater pool?
Test your current cyanuric acid level first. If it is below 30 ppm, pre-dissolve the recommended dose of granules in a bucket of pool water, then pour the solution into the deep end with the pump running. Wait at least 20 minutes before swimming and re-test after 24 hours of circulation.
How much stabilizer do I need for my pool size?
A general rule is 1 pound of cyanuric acid per 3,000 gallons to raise CYA by about 30 ppm, but always confirm with the Clorox Pool App or a fresh test before dosing, since starting levels vary by pool.
How often should I reapply chlorine stabilizer during the swim season?
Stabilizer is not consumed the way chlorine is, so you only add it to replace losses from splash-out, backwashing, or heavy rain. Most pools only need a top-up once or twice per season, which the Clorox Pool App will help you track.
Is this product compatible with all saltwater chlorine generators?
Yes, it is specifically formulated for saltwater pools and works with any salt cell system that produces chlorine, including popular residential brands like Hayward, Pentair, and Jandy.
Can I use this with a vinyl liner, plaster, or fiberglass pool?
Yes. The stabilizer is safe for all standard residential pool surfaces, including vinyl liners, plaster, pebble, and fiberglass, when used at the recommended 30–50 ppm range.
What comes in the box when I order this product?
You will receive a sealed 4LB tub of Clorox Pool & Spa Chlorine Stabilizer in granular form with a dosing label. The Clorox Pool App is a free download and is not a physical item in the box.
Is cyanuric acid safe to handle and store at home?
Yes, when used as directed. Keep the container tightly sealed, store it in a cool, dry place away from children and pets, and avoid inhaling the dust or letting it contact your skin or eyes during handling.
Will using too much stabilizer cause any problems for my pool?
Over-stabilization above 100 ppm can reduce chlorine effectiveness, a condition called chlorine lock. The Clorox Pool App helps you test and stay within the recommended range to avoid this.
What is the difference between chlorine stabilizer and pool shock?
Stabilizer is cyanuric acid, which protects chlorine from being destroyed by sunlight, while shock is a concentrated dose of chlorine used to quickly raise sanitizer levels. They serve very different purposes and are often used together as part of balanced pool care.
