Simple and durable. It's made of waterproof plastic to prevent the magnets from rusting. Due to the way the fabric is attached, you don't have to worry about sand or substrate sticking to the magnets. fibers and which scratches the glass during cleaning. It is also very durable, so it can last a long time. Super MagnetWith magnetic design, it can kill bacteria in aquarium water and improve water quality. Comes with an aquarium glass cleaner to clean grass, algae and gravel without scratching the glass. For glass up to 8 mm thick. Easy bathing and storage. It floats so you never have to worry about it sinking to the bottom of your pond, and you can take it out without getting your hands wet or disturbing your aquatic animals or plants. Aquarium Cleaning ToolThe aquarium disc cleaner can be used to clean the aquarium and provide a good living environment for fish. Ideal for glass fish such as saltwater tanks and grass ponds. These aquarium magnets make it easy to clean your aquarium panes. Widely UsedThe magnetic brush is the perfect tool for cleaning the aquarium or fish tank. Suitable for all types of tanks such as acrylic, glass or plastic. The magnetic glass aquarium brush is very practical to clean the aquarium without scratching the aquarium.