The tank works by water re-circulating providing fresh oxygen and allowing a wide variety of aquatic animals to flourish in the tank. The aquarium also features overhead LED lighting as well as color-changing LEDs. Undergravel filtration makes this tank low-maintenance, easy to clean. For functionality, the alarm clock/calendar/thermometer and desk caddy make this aquarium suitable for office, home or dorm room.Low voltage pump for water recirculation and undergravel filtration. LCD alarm clock with calendar. Temperature display. Nature sounds. Dual compartment desk organizer. Dimensions: 7″ x 9″ x 4″ Holds about 1.5 quarts. Includes:. USB Power Connector. Multifunction penholder. Nature sounds. Multicolor interior lights. Adjustable overhead light. Under-gravel filtration system. Low voltage pump. LCD Calendar with time/date; week/temperature. Alarm clock with snooze feature and countdown timer.
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