Features:1. Fish Stool Suction Collector: Fully automatic, compulsive absorption of fecal filters. Used as a filter, oxygenation and fecal collector to keep the aquarium clean. 2. How it works: The system operates on a pneumatic principle, treats the water in the tank, and stores fish manure and impurities in the intermediate compartment before returning the clean water to the tank.3. Save Your Time: The fish stool suction device will reduce the need for regular water changes and gravel washing. Contains fish waste to prevent water pollution and bad odor. Saves time in cleaning the aquarium for ornamental fish manure.4. Easy to Operate: Just place it in the aquarium and connect it to the air pump. When the compartment is full of fish waste, please empty and disinfect until it is cleaned before putting it back into the aquarium.5. At the bottom of the cylinder, there is a biological filter ball that helps the growth of nitrification hazards, which are essential for the nitrogen cycle. Note: This toilet can only be used with an oxygen pump above 5 watts. It is recommended to use an air pump above 8 watts. Notice:Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description:Material: PlasticSize: 16 x 8.5 cmTube diameter: 0.5 cmColor/Style: As the picture shownApplication: Fish Stool, Fish Tank, Aquarium