GLB Algimycin 600 is a non-metallic, non-foaming, polymer-based algaecide that kills and controls green algae. This product does not require pool closing. It clears water with a filter aid that removes dead and living algae fast. This product contains no metals and has been proven not to harm pool liners. Algimycin 600 is compatible with chlorine, bromine, ozone, salt water pools, and biguanide sanitizers.