Keep your Flipper Max working its best with Flipper Max ABS Plastic Replacement Blade Algae Scraper! These replacement blades are designed for use with the original Flipper Max and Flipper Max Float Magnetic Algae Cleaner (each sold separately). Great for use on acrylic tanks, each low-profile, ABS plastic blade offers three to six months of optimal cleaning performance. These blades are ideal for aquarium walls 5/8 to one inch thick. With Flipper, you'll love the convenience of cleaning your tank without ever getting your hands wet!