Suitable for aquariums with glass thickness less than 0.4 inch (10mm), more convenient and faster cleaning of algae and scum in the water tank.And it will not scratch the glass .This product can not only clean the aquarium, but also clean the windows and walls. It also has a very good effect. The strong magnetic force makes the inner cleaning brush follow the outer handle. Don’t worry about the internal cleaning brush falling, it will automatically float on the water. When you don’t want to use it, you can take it out of the water directly. It is very convenient. The handle adopts bionic design, which has anti-slip effect and saves more labor when used. The head of the product has a harder plastic scraper. It has a good effect on some dirty stains which are difficult to clean. The scraper can be disassembled separately and stored when not desired to be used. It can also clean windows and floors. After cleaning, no need to remove it. The brush is waterproof, just absorb it on the