Dual All-In-One Aquariums by Ultum Nature Systems feature everything that is loved about their standard rimless aquariums: 45° precision cut mitered edges, high-grade unobtrusive silicone for security and quality viewing plus low iron and 91% Diamant glass. Featuring a sleek, innovative built-in filter eliminating the need for an additional piece of aquarium equipment. The triple filtration chamber includes a coarse aquarium sponge, quality bio-media and a reliable water pump to provide consistent flow to the entire system. Cut out windows allow the user to easily gauge built-in chamber water level. A built in water level adjustment baffle allows the user to raise or lower the height of the water level in the first chamber for surface skimming or creating the option for wet dry filtration when used with the Media Tower.