Eliminates black algae and bacteria Probably the best algicide on the market ... Multipurpose effect five times more effective with one dosage: monthly in private pools: provides a bright blue color. Great efficacy against algae. Repels aquatic insects. Increase water transparency. It produces no foam. Employment dose: 1 L / 100 m3 every 30 days (family pools) or every 15 days (public pools). Apply the PM-614 once a month and have spectacular water with the least effort. Possibly the best maintenance algicide on the market. Inscription in the Plaguicides Register (Spain): Product registered under no. 17-60-08800 Use biocidal products safely. Always read the label and information on the biocidal product before use.