These external pumps are used either to return water from the sump to the main tank, to power a closed loop system or to power components such as protein skimmers. There are many options in external pumps with varying capacities a
These external pumps are used either to return water from the sump to the main tank, to power a closed loop system or to power components such as protein skimmers. There are many options in external pumps with varying capacities and low- and high-pressure models. When choosing an external pump, conventional wisdom suggests that healthy saltwater system should have its full volume of water turned over at least ten times an hour.