Description Fast Cleaning Brush: Strong magnetic aquarium cleaner helps you to scrape the dirt off the fish tank quickly and completely just drop the scraper side into the water no hands get wet and no damage to corals you will love the feeling of wiping the tank clean. FLOATING DESIGN: The internal floating avoids the brush sinking in the bottom of aquarium It floats in water and never sinks to the bottom of the tank if separating makes it convenient to take it out of the tank. ALGAE SCRAPER: Install a sharp blade as scraper in the head of the brush which easily removes stubborn marks, even if around corners The inside anti-scratch cleaning pads cleans fast and efficiently without scratching the aquarium glass. MULTI-PURPOSE USAGE: Aquarium glass cleaning brush can be used not only in the aquarium but also for cleaning windows glass doors and other glass. Notes: Our brush is not used for tanks made of acrylic or plastic material. How to avoid scratches: generally this aquarium cleaning brush will not scratch the tank but it may cause scratches if the blade gets defects or it picks up small pieces of sand or gravel pancaked between the sides during a flip So please inspect the blade before use dont use it near sand clean the brush timely after use.