CLOROX Pool&Spa XTRABLUE 3" Chlorine Tablets 35 lb Pail — Stabilized, Slow-Dissolve 3-inch Tablets for Algae & Bacteria Control

Clorox Pool&Spa XTRABLUE 3" Chlorinating Tablets are individually wrapped, stabilizer-formulated chlorine tablets that sanitize pool water, inhibit algae growth, and help maintain a soft, comfortable swim.

Keep your pool safe and inviting with a commercial-style chlorine tablet designed for reliable, long-lasting sanitation. These 3-inch XTRABLUE tablets dissolve steadily, include ultraviolet stabilizer to protect free chlorine from sun loss, and contain conditioners that improve water feel. The 35-pound pail supplies weeks of routine treatment for medium to large pools and is compatible with most tablet feeders and skimmers.

How do these tablets keep pool water clean and clear?

Each tablet releases available chlorine to destroy harmful bacteria and sanitize water, while built-in algicide action prevents the common green, mustard, and black algae types from taking hold. The slow-dissolve formula provides consistent chlorination and helps reduce wide swings in chlorine levels.

• 3-inch slow-dissolving tablet for steady chlorine release
• Effective against bacteria and all common pool algae types
• Includes chlorine stabilizer to reduce UV degradation
• Individually wrapped for cleaner handling and storage

Will these tablets change how the water feels or affect pool surfaces?

Tablets include water-conditioning agents that help create a smooth, pleasant swim without leaving a filmy residue when used as directed. They are formulated to be safe for typical pool finishes like vinyl, plaster, fiberglass and tile when you follow recommended dosing and monitor chemistry.

• Conditioners improve skin and hair-friendly water feel
• Safe for vinyl, plaster, fiberglass and tile surfaces
• Regular testing prevents buildup or surface staining

How should I dose and add these tablets to my pool?

For routine maintenance, apply two 3-inch tablets weekly for every 10,000 gallons of pool water, adjusting quantity based on pool use, temperature and test results. Use a floating dispenser, inline feeder, or skimmer-compatible feeder designed for 3" tablets; avoid dropping tablets directly into the pool water near vinyl liners or steps.

• Standard guideline: 2 tablets per 10,000 gallons each week
• Use an approved dispenser or feeder for even dissolution
• Increase frequency after heavy use, rain, or warm weather
• Always test free chlorine and pH regularly for balance

How can I monitor and troubleshoot my pool chemistry with these tablets?

Pair the tablets with routine testing to keep chlorine, pH and stabilizer levels in range; this prevents over-chlorination and ensures algae protection holds. The Clorox Pool App provides step-by-step testing guidance and tailored dosing recommendations based on your pool size and current chemistry.

• Test free chlorine and pH at least twice weekly
• Use Clorox Pool App for personalized dosing tips
• Adjust tablet count for hot weather or heavy bather loads

Who is this for? Pool owners, property managers and maintenance pros who want dependable, long-lasting chlorination and algae control will appreciate XTRABLUE tablets. The 35 lb pail suits backyard pools through larger residential installations that need weekly maintenance, while individually wrapped tablets make handling and storage tidier for busy pool-care routines.