Simple AssemblyFirst step: attach the air hose to the two connectors of the check valve. Second step: one connector connects the mini air pump, and the other connects the air stone. Only take a few minutes. Various Applications The mini air pump can be used for all air-operated aquarium accessories, such as rock stones. bubbles, bubble decorations and small sponge filters. It can also be used for fresh water and salt water. Low Consumption The energy-saving mini air pump consumes only 1 watt during operation. More importantly, you can pay little money and get various features. A first class air pump for all betta and marine aquariums up to . High Air Flow The maximum flow rate of the air pump aerator oxygen can reach . You can use small sponge filters and large air stones. Properly aerate the aquarium, give your pet fish more water movement and better oxygen exchange. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.