Super Strong Magnetism: The aquarium magnetic cleaner is made of a powerful rare earth magnet that adheres to the glass, making it easier to remove algae during normal cleaning and maintenance. Double-Sided Cleaning: Inner pad with high-density cleaning hooks for effective cleaning of algae and other stains; Outer pad with soft, durable felt to wipe away dust and flat stains without scratching the glass. Self-Floating Design: Convenient and easy to use thanks to a smooth glide on the outside of the magnetic brush that guides the inner scraper, providing scratch-free algae remover maintenance for glass aquariums. When you remove the aquarium magnetic cleaner, the inner magnetic aquarium brush automatically floats on the water surface and can be easily retrieved without getting your hands wet or disturbing the fish. Exquisite and Durable: Aquarium glass cleaner is beautifully designed with a rounded handle to make you feel relaxed and comfortable when using it. This magnetic aquarium window cleaning accessory is made of high-strength and corrosion-resistant material, durable and does not need to be replaced frequently. [3 Sizes]: ✅ S: for 3-6.5 mm thick aquarium; ✅ M: for 6-13 mm thick aquarium; ✅ L: for 12.5-17 mm thick aquarium; 🌹 Aquarium glass cleaning brush with one-year warranty. When not in use, use a thick cardboard clip in the middle to separate the brushes for next use.