JBJ's brand-new Oceanstream circulation pumps are equipped with top-quality features, including magnetic holders as well as a pivot ball that can be articulated. The pumps are innovative and feature an exclusive PaddleDisc impeller which diverts water toward the outer edges of the housing, unlike traditional propeller-based pumps. This allows for the highest "random flow" across large circular currents, which allows for smooth water movement, without harming corals that are directly in the path of its flow. Magnetic mounts are suitable for glass aquariums as thin as 1/2" thick. Magnetic mounts are suitable for glass aquariums that are up to 1/4" thick.