AquaGenisis Robosnail: Aquarium Glass Cleaning Robot
Here is a robot that helps you keep your aquarium clean. Robosnail is a fully automated glass cleaner that prevents algae build up on the aquariums surface. It can clean the surface of your aquarium once a day and works on standard glass aquariums of 55 gallons up to 150 gallon aquariums. The battery lasts 30 minutes.