It is a new upgraded version of Nano tank cleaning kit WHAT WE UPGRADED - Add a flow clip that control the water flow easily. - A bigger size operation bulb that has more powerful suction. - Add a duckbill shape nozzle to enlarge the suction area and to prevent tiny particles blocking the tubing. RRODUCT DESCRIPTION This mini water cleaning pump kit is ideal for cleaning mini/Nano fish tanks or small betta fish tanks. When you use a normal-sized water changer to clean the small fish tank, you will find that when you haven't started to clean, the water has been completely sucked away. Because the size of a normal size water changer is too large for a Nano tank. While this mini water cleaning pump kit includes a thinner water tubing (1/4 '' ID) transports water slowly (Max Flow Rate is 0.4 Gal/min), preventing messy accidents and leaving you enough time to clean the Nano tanks and get rid of fish droppings.