[Small and easy to use]: The aquarium pump can be installed anywhere in the aquarium with minimal space and easy to use. Just connect the porous stone and silicone hose to outlet of the pump, then immerse the porous stone in the aquarium. (Note: the mini pump should be placed above the water surface) [Stable and durable]: This aquarium oxygen pump is not a transmission part, driven by high quality materials and piezoelectric plates, non-toxic, no motor, no shaft, no other annoying mechanism, durable and without danger to your fish. The stable pressure is 12 kPa, stable volume [Super Quiet]: The aquarium air pump is a super quiet aquarium oxygen pump, with a unique design that eliminates noise from the source. Less than 35 decibels, there will be no more noise in the middle of the night, and will not wake up your child. Plus, when you enjoy the movie, it won’t stop you. [100% Satisfaction Guaranteed] We are very concerned about the feelings of our customers, so your satisfaction is our
