Aqueon Algae Cleaning Magnets Glass/Acrylic Medium;

Aqueon’s Algae Cleaning Magnets are a simple and easy solution to effectively remove algae from all sides of glass or acrylic aquariums. If separation occurs, the magnet will fall upright while also facing the aquarium for easy retravel. The bowed bottom weight allows the scrub pad to rest above the gravel, reducing the risk of sediment scratching the aquarium walls. No need to throw out the entire magnet cleaner when pads become worn down. Simply click a new pad on to the magnet for quick and easy replacement. For either glass or acrylic aquarium use.