GLB Pool & Spa Products 71108 Algimycin 600 1-Quart Algaecide algimycin 600 the initial dosage to prevent algae Maintenance dosage (weekly), add 3 ounce per 10, 000 gallon then dilute algimycin 600 with at least 9 parts water before applying To treat existing green algae, add 16 ounce per 10, 000 gallon then 24 hours after treating visible algae growth Compatible with chlorine, bromine, ozone, salt water pools, biguanide sanitizers, dilute algimycin 600 with at least 9 parts water Measures 13.1-inches in length by 10.1-inches in width by 9.9-inches in height; not for sale in Catalina island