This tool is specifically designed for cleaning all areas of your biOrb. Its cleaning surfaces are made from a soft silicone which gently cleans inside your biOrb and brushes algae off your decor. Plus, it has an extendable handle which means you can clean deeper tanks without getting your hands wet. Turn the tool upside-down to use the silicone head to clean inside your bubble tube. The head can also beused to change your air stone. Box Contains Cleaning Tool pinkFeatures: Silicone brush head cleans all areas of the aquarium Extendable to reach the bottom of the largest biOrb Can also be used to clean the bubble tube