Review on ALON Aquarium USB Air Pump: Ultra Quiet Nano Air Pump with Hanging Buckle and Check Valve – Blue (Blue) by Maria Duncan

I love how quiet this pump is. I love that it comes with an air filter so it lasts longer. Note. The pump itself requires very little energy to operate. So small that the power bank turns off automatically because it thinks nothing is connected to it. To solve this problem, the designers added a resistor to this pump to draw enough current to prevent the power supply from being cut off. If you don't need this feature, you can open the pump at your own risk and cut off the large resistor. connected to the engine. This significantly reduces energy consumption without impairing functionality. You can find the process on YouTube, just search "bigclive pump".