Aqueon Standard Aquarium - Black Frame - 20 gallon tank - Clear SiliconeAqueon Standard Aquarium Black Frame 20 gal Clear Silicone The Aqueon Standard Aquariums are made with care to assure that they can stand up to almost any application. These aquariums come in a wide range of sizes, as well as in black and oak trim styles. Larger aquariums feature a one piece center braced frame that eliminates glass bowing over time. 24" x 12" x 16"