MA5X ECO MARINE Barnacle Off is a powerful solution that targets stubborn marine deposits. With its concentrated formula of organic and inorganic materials, it effectively neutralizes high pH surfaces, eliminates rust and stains caused by salt deposits, and removes barnacles, sea lime, and other organic sediments. This versatile product is perfect for water cooling systems that use seawater. Instructions: Dilute Barnacle Off with 1 part product to 4 parts water for heavy rust or salt deposits, barnacle, and sea lime removal. For lighter tasks, dilute with up to 10 parts water. Apply the product using a spray bottle or brush, allow it to act for ten minutes, then remove with a jet of water or a damp cloth. For engine or radiator applications, start with a high dilution to recirculate the product effectively.