Flow and recirculation pumps are essential to the operation of a functioning marine aquarium. They help to ensure that the aquarium inhabitants feel comfortable and are always supplied with enough fresh and oxygenated water. The water is sucked in by the recirculation pumps and is then treated by protein skimmers, filter media, etc. and returned to the aquarium clear and cleaned. But corals are also particularly dependent on a constant and sufficient current, which washes away dirt particles and carries nutrients to them. The DuplaMarin pumps meet these requirements and impress with their high quality, performance and smooth operation.