Trigger Systems ATO Containers are a great match for any aquarium. The tall and narrow profile fits well in most stands, while the large capacity conveniently extends time between refills. Features Subtle laser engraving marking the water level Two x 0.25″ OD (outside diameter) hose ports Lid to prevent evaporation Opening for wires and hoses Made of 1/4″ thick acrylic to prevent bowing Rounded and polished top Made in the USA! Dimensions 5 Gallon - 6″ long x 14″ wide x 15″ tall 10 Gallon - 10″ long x 16″ wide x 15″ tall