Glass cleaners Mega Mag are completely waterproof and protected against corrosion for use in freshwater aquariums and saltwater fish. The large cleaning surface of 105 x 80 mm makes it easy to use and the way the edges, can clean up the most difficult areas. Cleaning pads inside and outside magnet can be changed easily. The magnet can be placed inside a string, so that the magnet can be easily removed from the aquarium. Mega Mag glass cleaners contain extremely strong magnets Neodym and must be handled with care. Mag Mega Model 1 is designed for aquariums with a crystal thickness 6-12 mm.