Aquarium Algae Scrapers-Glass Cleaner Magnetic Brush

Features:1. Clean algae and scum off of the inside of your aquarium the easy, fun way!2. Strong magnetic forces cause the inside cleaning brush to follow the outside handle. Just wipe the outside, and the inside is cleaned!3. The inside piece floats, so if it becomes separated from the outside piece, it's easy to retrieve.4. Simply drag the no-scratch, felt-lined handle and inside your aquarium, the scrubber follows, cleaning as it goes5. Important: Made for common glass fish tank, not for acrylic and low iron glass. Please choose the size by the thickness of your fish tank glass. The larger, the stronger the magnet.Specifications:1. Material: plastic & MagneticCaution:1. Those patients who impanted pacemaker,please stay away from this product. 2. The children please stay away from this product.