In The Swim Pool Algaecide 50 - 1 qt. bottle
Algaecide 50 is potent, ammonia based non-metallic algaecide that will destroy all types of pool algae. Its concentrated formula is non-staining and non-residue forming.  Contains a "wetting" agent that prevents algae from bonding together.  Safe to swim a few hours after treatment.Initial Dosage:5.13 oz. per 10,000 gallons.Weekly Dosage:1.33 oz. per 10,000 gallons.