The Penn Plax Wizard Pro Aquarium Cleaning Kit is equipped with everything you need to keep your glass aquarium looking picture perfect. The quick changing tools system allows multiple cleaning methods to be used with this one product. The metal safety scraper removes heavy algae and mineral deposits while the coarse pad removes built up stubborn algae and the cleaner sponge cleans of new algae growth. The extendable aluminum handle expands to 22? allowing reach to all corners of the tank while the corner adapter with coarse pad allows you to clean those hard to reach places.