Reef One\'s new patented biOrb Algae Cleaner is set to revolutionize aquarium cleaning. Features: Better cleaning results. Unique blade design removes algae in sheets rather than in a cloud allowing easier removal and is tough enough to remove the most stubborn algae, even coralline algae. Simple to use and less damaging. Hi tech polymer blades clean without scratching and prevents grit getting stuck in cleaning surfaces, and if the magnetic coupling is released it floats! The cleaner works on the bowl aquariums i.e Biorb 30, 60 and Baby as it is designed to clean a curved surface Suitable for any small bowl aquarium, not just biOrb.