Removes Tough Waterline Stains Fast Breaks down stubborn brown, yellow, and rust stains caused by lake, river, and saltwater exposure. Dissolves Marine Mineral & Algae Buildup, Cuts through hard water deposits and surface staining without excessive scrubbing. Professional Marine-Strength Formula Designed for serious boat owners who want real results — stronger than everyday household cleaners. Restores Brightness to Fiberglass & Painted Hulls Brings back a clean, like-new appearance to gel coat and painted surfaces. Fast-Acting & Easy to Use Spray on, allow to work, rinse off. Ideal for seasonal maintenance or heavy buildup removal. Made in the USA Premium quality you can trust. “Ideal for Boat Owners & Marinas”