Strong Magnetic Design-- Designed with the magnet, when you move the outer magnet, the inner magnet follows, cleans the glass and promotes water quality. Can also clean aquatic plants, algae and gravel without scratching the glass.Suitable for mini aquariums: suitable for aquariums with a thickness of less than 8 mm. Can be used to clean the aquarium and provide fish with a good living environment. Ideal for small glass aquariums, such as salty freshwater and grass aquariums.Comfortable grip: The magnetic aquarium glass cleaner is ergonomic, comfortable to hold in the hand of the brush. User-friendly design to make you feel relaxed and comfortable when using.Easy to use: Imported ABS material has beautiful appearance and light weight, so the corners of the aquarium can be cleaned.Durable-- Nodymium magnets, magnetic materials with the highest magnetic strength in addition to electromagnetics. Can be firmly adsorbed on the inner wall of the aquarium, can be used for up to 10 years. The magnetic field generated by the magnetic brush can magnetize the aquarium water, kill a variety of bacteria and improve water quality, but it will not harm your pet in the water.