Betta Choice Medium Magnetic Brush for Acrylic removes algae and other dirt from the aquarium panes. It easily fits to the aquarium, and you can clean the panes without getting your hands wet ! The cleaning brush floats meaning that it is easily retrievable should the brush become detached from the handle during cleaning. Suitable for acrylic aquariums up to 10mm thick. This product can be used glass aquariums, but we recommend the stronger CE027 Betta Choice Large Floating Magnetic Algae Cleaner for a better performance.