Strong Magnetic Design-- With the magnet design, when you move the outer magnet, the inner magnet will follow, thus cleaning the glass and improving water quality. Also cleans water grass, algae and gravel without scratching the glass. Suitable for mini aquariums: Suitable for aquariums less than 8 mm thick. It can be used to clean the aquarium and provide a good living environment for fish. Ideal for small glass aquariums such as freshwater, saltwater and grass aquariums. Comfortable grip: The Aqua Magnetic Glass Cleaner is ergonomic and comfortable to hold. Its ergonomic design makes it easy and comfortable to use. Easy to use: Imported ABS material, beautiful appearance, light weight, and the corners of the aquarium can be cleaned. Durable : Neodymium magnets, the strongest magnetic material other than electromagnets. It can be firmly attached to the inner wall of the aquarium and can be used for up to 10 years. The magnetic field generated by the magnetic brush can magnetize the aquarium water, kill many kinds of bacteria and improve water quality, but it will not harm pets in the water..Items from Sheng Xinshun's shop