‘Sump’ isn’t a very exotic sounding word. In reality a sump isn’t. It may be hidden away and seldom seen, but a sump is a very useful addition to the marine aquarium.
So what is an aquarium sump? It is another aquarium that is in addition to and in support of the display aquarium. It adds gallonage to the system which is a good thing from a water quality point of view and they also allow items of hardware to be hidden from view. A sump can house heaters, a protein skimmer etc, so that the display aquarium remains free of technical hardware and nothing is seen apart from the fish and/or the reef. The sump can also contain filtration, which again aids seawater quality. [Read more]