Wizard Heavy Duty Cleaner & ScraperAlgae Scraper Acry/Plast Tanks. Wizard Heavy-Duty Aquarium Cleaner and Scraper is a dual-angled scraper with double the cleaning area. The Aquarium Cleaner and Scraper is designed with a dense weave, the scraper reaches all surfaces and removes algae and hard water deposits from fresh and marine plastic and acrylic aquariums. Cubes: 0.0025. Weight: 0.5200 lbs.