CLOROX Pool&Spa 43040CLX Algaecide, 40-Ounce, Blue/Green

Clorox Pool&Spa Algaecide XtraBlue is the strong, multifunctional algaecide that kills all types of algae in 24 hours. Kills or prevents green, mustard and black pool algae.

• All-In-One algae killer
• Quick and effectively kills green, mustard and black pool algae
• Treats up to 25,000 gallons