RS Electrical Aquarium RS-11 Magnetic Scrubber 10 Cm Medium Size

This a two piece aquarium cleaning device that consists of two magnetic sides. One side is coarse and goes on the inside of the tank, the other side is soft and goes on the outside. Once the magnets have attached, you can move the aquarium cleaner around the glass to scrub off algae. Strong magnetic forces cause the inside cleaning brush to follow the outside handle. Just wipe the outside, and the inside is cleaned! The RS-11 Cleaner measures 10 cm in length.