You might not know who W. Colsman is, but you might have seen his very large reef tank. This massive tank is located in Germany and has been visited by a large list of celebrities within the industry. The tank is a 230 x180 x175 centimeters or 90.5″ x 70.86″ x 68.89″ which equals about 1,912 gallons. We’re thinking that a lot of fish would be happy with that much swimming room, plus the tank was designed and built by Claude from Fauna Marin origins. Enjoy the video.