Clorox Pool&Spa XtraBlue 1" Chlorinating Tablets – Outdoor Backyard Pool Sanitizer, Long-Lasting Sun-Resistant Chlorine for Open-Air Swimming
Clorox Pool&Spa XtraBlue 1" Chlorinating Tablets – Outdoor Backyard Pool Sanitizer, Long-Lasting Sun-Resistant Chlorine for Open-Air Swimming
Couldn't load pickup availability
Why you'll love it
- Trusted Clorox brand reputation for pool sanitation
- All-in-one tablet that kills bacteria, stops algae, and prevents corrosion/scale/stains
- Built-in chlorine stabilizer extends tablet life under direct sunlight
- Conditioners leave water feeling silky smooth rather than harsh
- Compatible with every common pool surface (vinyl, plaster, fiberglass, tile) so no risk of damage
- Free Clorox Pool App gives expert-level testing and personalized dosage guidance from home
Perfect for
- Routine weekly chlorination of small residential pools
- Preventing and killing green, mustard, and black algae blooms
- Protecting pool equipment, liners, and surfaces from corrosion, scale, and stains
- Maintaining clean, silky-feeling water throughout the swimming season
- App-guided water testing and dosage adjustments for beginners
Surface Protection
Prevents equipment corrosion, surface stains and scale.
Long-Lasting Sunlight Protection
Enriched with a chlorine stabilizer to extend the life of your clean.
Silky Smooth Feeling Water
Contains conditioners for silky smooth feeling water.
Weekly-Use
Maintain 1 to 4 parts-per-million of Free Chlorine by applying tablets weekly.
Easy Application
Apply chlorinating tablets to your feeder, skimmer or floater.
Test Weekly
Your pool chemistry can change quickly. Test your pool water weekly to ensure your chlorine and pH remain within optimal swimming ranges.
Product Information
Cleans Water & Stops Algae: Kills harmful bacteria and prevents equipment corrosion, scale and stains. Kills and prevents all types of swimming pool algae (green, mustard, black)
Long-lasting sunlight protection: Contains chlorine stabilizer to extend the life of your clean
Creates Silky Smooth Feeling Water: XTRABLUE chlorinating tablets contain conditioners for silky smooth feeling water
Usage: Safe for all swimming pool surfaces, including vinyl, plaster, fiberglass, and tile
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 XtraBlue 1” Swimming Pool Chlorinating Tablets, Kills Bacteria & Stops Algae, Perfect for Small Pools (5 LB);29005CLX.Number of Items: 1
Item Type Name: XtraBlue® 1" Chlorinating Tablets, 5 lb.
Included Components: Includes: 1 x Pool&Spa 29005CLX XtraBlue 1" Chlorinating Tablets, 5 lb
Item Form: Tablet
Product Benefits: Corrosion,Kills Bacteria,Scale
Item Weight: 5 pounds
Frequently Asked Questions
Will these tablets hold up in direct sunlight all day without burning off too fast?
Yes. Each 1-inch tablet contains built-in cyanuric acid stabilizer that acts like sunscreen for the chlorine, so the active ingredient stays effective even in pools that get full midday sun. You get steady, long-lasting chlorination rather than a quick burst that fades by afternoon.
Can I use these in an above-ground pool that sits on an open deck with no shade?
Absolutely. The slow-dissolving formula and UV protection make these tablets ideal for exposed above-ground setups, including seasonal and courtyard plunge pools. Just drop them in a floater or feeder and they will keep working through hot, sunny stretches.
How well do they perform during outdoor pool parties with heavy splash-out and sun exposure?
Very well. The combination of stabilized chlorine, algaecide, and conditioners keeps bacteria and algae under control even when bather load rises. After a busy weekend, run a quick test in the Clorox Pool App to confirm levels and top up if needed.
Are these tablets durable enough to store in a hot garage or shed between uses?
Yes, as long as the container stays sealed and out of direct sun, the tablets remain stable in typical outdoor storage conditions. Avoid leaving the bucket open in humid or rainy spots, and keep it away from fertilizers and other chemicals.
Will I need extra algaecide if my pool gets a lot of leaves and outdoor debris?
These tablets already include algae-fighting ingredients that target green, mustard, and black algae. For pools surrounded by trees, brush the walls weekly, skim debris often, and use the Clorox Pool App to fine-tune your dose after heavy leaf fall.
Is this a good option if I want one product for my outdoor pool and my indoor spa?
Yes, the tablets are formulated for small residential pools and spas, and the universal surface compatibility means they are safe for vinyl, plaster, fiberglass, and tile. For indoor spas with very small water volume, simply use fewer tablets and follow the app's dosage guidance.
Can I take these tablets to a vacation home or rental property pool that only gets used on weekends?
Yes, the slow-release format is well suited for pools that sit idle between visits. Drop tablets in before you leave and the chlorine will keep protecting the water. Test with the Clorox Pool App on arrival and shock if levels have drifted.
How does this compare to liquid chlorine for an outdoor pool?
Liquid chlorine works fast but burns off quickly in the sun and requires frequent dosing. These stabilized tablets release steadily over days, so you spend less time adding chemicals and more time enjoying the pool.
Is it better than a salt water chlorinator for a small outdoor pool?
For small residential pools, tablets are far simpler and less expensive up front. Salt systems require installation, electricity, and ongoing cell replacement. Tablets give you comparable sanitation with no equipment investment.
Will I need to buy a separate UV protector or stabilizer for sun exposure?
No, cyanuric acid is already built into every tablet. You get chlorine plus stabilizer in one step, which is one of the main reasons these work so well in open-air pools.
What happens if a sudden rainstorm dilutes my outdoor pool water?
Rain can lower chlorine levels and shift pH. Test with the Clorox Pool App after the storm and add tablets or a balancing product as recommended. The slow-dissolving format means your in-pool tablets will continue releasing as the water recovers.
Could outdoor heat cause these tablets to clump or break down in the bucket?
When stored properly in a cool, dry place with the lid sealed, the tablets hold their shape and potency. Avoid stacking heavy items on the bucket and keep it off concrete floors that get very hot in summer.
I'm worried about the strong chlorine smell outdoors. Is that normal?
A strong chemical smell usually means the chlorine is working hard against contaminants. Properly balanced water with these tablets should smell mild or neutral. The built-in conditioners help keep the water feeling clean rather than harsh.
Will the tablets leave residue on my pool deck if a floater tips over?
If a tablet falls out, simply pick it up with a gloved hand and return it to the floater or feeder. The tablets are slow-dissolving, so they will not crumble into powder on contact. A quick rinse of the deck is all that is needed.
How long will one 5 lb bucket last for my outdoor pool?
It depends on pool size, bather load, and sun exposure, but for a typical small residential pool used two to four times a week, a 5 lb bucket usually covers most of a swim season. The Clorox Pool App tracks usage and tells you when to reorder.
Can I leave tablets in a feeder outdoors all winter if I close the pool?
It is better to remove tablets from the feeder before winterizing, store them dry in the original sealed bucket, and use winter-specific chemicals to protect the closed pool. This keeps the tablets in good condition for next season.
How do I use these 1-inch chlorinating tablets in my pool?
Add the tablets to a floating dispenser, skimmer basket, or automatic chlorinator. Adjust the feeder so that free chlorine stays between 1 and 3 ppm. Test the water weekly with the Clorox Pool App, which gives you a personalized dose and tips.
How many tablets should I add to a small pool?
It depends on pool size and current chlorine level. A common starting point is one tablet per 5,000 gallons every week, but the Clorox Pool App gives a precise number based on your test results and pool volume.
Do I need to shock my pool if I use these tablets?
Routine shocking is not required every week, but shocking after heavy use, storms, or algae blooms is a good idea. The Clorox Pool App will tell you exactly when and how much shock to add.
Are these tablets safe for vinyl, plaster, fiberglass, and tile pools?
Yes, the formula is compatible with all common residential pool surfaces. Anti-corrosion, anti-scale, and anti-stain additives also help protect liners, finishes, and metal fittings.
Will this work with my salt water pool?
Salt pools still need stabilized chlorine at times, especially when the salt cell cannot keep up with demand. These tablets can be used alongside a salt system to maintain proper levels.
What comes in the box, and what do I need to buy separately?
You receive one 5 lb bucket of 1-inch Clorox Pool&Spa XtraBlue chlorinating tablets. You will need a floating dispenser, skimmer, or automatic feeder, and a test kit or the free Clorox Pool App for water testing.
Are these tablets safe to store long term?
Yes. Keep the bucket sealed in a cool, dry, ventilated area away from other chemicals, heat sources, and direct sunlight. Under proper storage, the tablets stay effective for several seasons.
Can these tablets expire or lose effectiveness?
Like all pool chemicals, they last longest when stored sealed and dry. Over very long periods, potency can slowly decline. The Clorox Pool App can confirm whether your current dose is still achieving target chlorine levels.
What is the difference between 1-inch tablets and 3-inch tablets?
Both use the same chlorine chemistry, but 1-inch tablets dissolve faster and are ideal for smaller pools, feeders, and precise dosing. 3-inch tablets suit larger pools and commercial use because they last longer per piece.
