Boat Magic Multi-Purpose Cleaner Gallon
A unique, versatile, multi-purpose cleaner and acid wash unlike any other. Cleans scum from waterlines, removes barnacles and zebra mussels from bottoms and drives. Descales and cleans engines, pumps and filters. Removes mineral deposits, rust, mildew and stains from glass, tile and porcelain. Safer to use buffered hydrochloric acid base won't harm skin and minimizes fumes. Also excellent for use as an acid wash to etch metals in preparation for painting.
Warning - Not to be used on concrete surfaces!