GLB Algae-X - 1 Qt. Overview GLB Algae X is a long-lasting, non-foaming, multi-purpose polymer algaecide. It is effective over a wide pH range. This product has been proven not to harm liners or affect swimmer comfort. It is easier to prevent algae growth than to destroy established algae, Algae X does both. It's the economical, all purpose algaecide. This product is compatible with chlorine, bromine, ozone, salt water pools, and biguanide sanitizers. What’s in the Box 1 x GLB Algae-X - 1 Qt. Features Contains 30% Polymer Algaecide. Does not Require pH adjustments to be effective. Ingredients Active Ingredient: Poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride]: 30% Other Ingredients: 70% Directions Initial Treatment: Visible Algae Growth: 32 fl oz per 10,000 Gallons. Clean Pool: 18 fl oz per 10,000 Gallons. Routine Maintenance: 6 fl oz per 10,000 gallons of water per week. Compatibility Compatible with chlorine, bromine, salt water Chlorine, ozone, biguanide and mineral sanitizing systems. Brand GLB®