Designed for cleaning smaller aquariums, the Fluval Mini Glass Cleaner uses a strong magnet to remove algae without scratching your glass. Its compact, ultra-slim design easily reaches tight corners and even curved aquarium walls, providing thorough coverage in those hard-to-reach areas. A raised edge ensures a secure grip, while the floating feature allows for easy retrieval, making aquarium maintenance hassle-free. Algae Remover Ideal for Small Aquariums Flexible Floating Magnetic Secure, Easy Grip Glass thickness Max 6mm