Penn Plax WZ20 Wizard Glass Aquarium Algae Scraper and Scrubber Combo Kit, 27" PERFECT FOR AQUARIUM CLEANING AND MAINTENENACE: the Penn Plax Wizard Scraper and Scrubber will remove algae and mineral deposits from the walls of your tank EXPANDS TO 27 INCHES LONG: helps to keep your hands dry while still reaching all the hard-to-get spots in your aquarium STAINLESS STEEL SCRAPER: cleans off the heavy algae and mineral deposits, while the sponge cleans off new algae growth. SHOP PENN PLAX FOR ALL YOUR PETS NEEDS: Penn Plax is a manufacturer and distributer of top pet supplies, who specialize in creating excellent pet products for animals both great and small.