With so many different kinds of filtration systems in the market, it can be difficult to choose one that works best for your aquarium. To get you started, you may want to take a look into the Berlin Sump BS-1 from Pet Store. This system is pretty straightforward and simple. It utilizes a sump area (an almost empty white box with ample space, 23" x 12" x 14") in which various kinds of reef equipment can be put in, such as protein skimmers, etc. It has a spacious area with an open top to allow for quick and easy access of the sump chambers. This feature makes maintenance easy and fast -- though maintenance for this system isn't that high and often to begin with.

The sump area can carry up to as much as 125 gallons of water. Inside the sump, you can find a small tube and a filter sock than can catch solid materials and organisms as small as 100 microns.

The Berlin Sump BS-1 is highly versatile. It can be used for either saltwater of freshwater fish tanks. It is also affordable, making it a practical option. It works best with a live rock that enables biological filtration and a protein skimmer that removes excess protein. No wonder it's a very popular choice for a filtration system by both hobbyists and professionals alike.