Fast-Acting Algae Treatment: Clorox Pool & Spa Swimming Pool Algaecide helps prevent and treat green pool algae quickly and controls algae growth in pools keeping it crystal clear. Non-Foaming Formula: It effectively eliminates algae growth and offers longer-lasting protection for your pool without any foaming. Effective Kill & Preventative Treatment: Clorox Pool&Spa Swimming Pool Algaecide effectively kills existing algae and prevents future growth, ensuring a pristine pool environment. Suitable for All Pools: This non-foaming formula suits all types of pools, including saltwater pools. 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.