This version of the Oase Aquamax pond pump is specially designed for dry installation. ie, it is not submersible under the water but joins up straight to your pipework. It won\'t suit the pump fed system employed by the majority of our customers but it is perfect for a gravity-fed system favoured by koi keepers. The Aquamax Dry pond pump should be set up below the water level in a separate pump chamber. By keeping the pump away from the main pond water in this way you receive the benefits of a safer pond environment and a pump that is easy to access and therefore maintain.