The Flipper Pico Black 2 In 1 Magnet Aquarium Algae Cleaner (Glass) can be used on glass tanks up to 6mm (1/4") thickness. Flipper's patented design creates the only 2 in 1 aquarium cleaner that can FLIP from scrubber to scraper simply by rotating the handle. Complete cleaning without ever getting your hands wet.

• For glass tanks
• Only 1" X 1.25" X 1.25". Great for small tanks.
  
• Designed for tanks up to 1/4" (6mm)
  
• Made with rare earth magnets for incredible cleaning strength and durability.
  
• Replaceable plastic scraper
  
• Unique orienting buoyancy always keeps the magnets facing the glass/acrylic for easy retrieval. Plus, Flipper is nearly neutral buoyancy so it does not sink like a stone if the magnets are disengaged.