TOM TM1096 Aquarium Maintenance Mr. Cleaner Battery Operated Gravel Siphon. KollerCraft is highly regarded for supplying superior quality, innovative pet products and reliable service. This battery operated siphon is perfect for siphoning nano tanks and other aquariums when you need to remove fish waste and other detritus without removing valuable aquarium water. Easy flow rate allows for spot cleaning and getting to difficult to reach areas