The MK-408A air pump assists to increase the level of oxygen in your water tank and maintains the optimal quality of water. This air pump is silent and does not make much noise when working. It can be connected with almost any air pipe that will facilitate the generation of more oxygen into your aquarium. The air pump will help to release oxygen into the water. This process is extremely beneficial for your aquarium fish as it helps to get rid of the impure gases as well.