Robelle Algaestroy 50 is a powerful and concentrated formula that combats all types of algae that grow in swimming pools and spas. While it's extremely effective, this swimming pool algaecide is safe enough to swim 15 minutes after treatment. Robelle Algaestroy 50 contains no metals so it will not stain surfaces and leaves no residue. Whether you want to kill existing algae blooms or simply prevent future algae growth this algaecide is an excellent value.

50% Dimethyl Benzyl Ammonium Chloride

Robelle Algae Control is a powerful and highly concentrated, chelated copper-based algaecide. This no-foaming algaecide effectively controls green, mustard, and black algae in swimming pools without clouding pool water. This reliable, safe copper algaecide is fast acting so that you can swim 10 minutes after treatment. Robelle Algae Control keeps your pool water clear and inviting.

7.41% Chelated Copper

Robelle Black Algaecide has been specially formulated to prevent and kill the growth of black algae, but is also effective on green and mustard algae. Although black algae are known to be particularly stubborn and often resistant to standard algae removal chemicals, this is the product to turn to when no other product will work. This potent and effective formula contains no metals, so it won’t stain surfaces and is non-foaming. Robelle Black Algaecide helps to clear cloudy water for a cleaner, healthier swimming environment.

60% Poly Algaecide

Robelle 3 Month Algaecide is a long lasting, highly concentrated, chelated copper-based algaecide which kills and prevents green, mustard and black algae for 90 days. This simple to use algaecide is non-foaming and will not stain surfaces. It is recommended that your pool water be balanced before using Robelle 3 Month Algaecide. One single treatment will keep your pool clean and healthy for 3 months.

11.8% Chelated Copper