TOM TM1138 Aquarium Surface Skimmer-canister and power filters, KollerCraft is highly regarded for supplying superior quality, innovative pet products and reliable service, Continuous siphon overflow efficiently skims dissolved organics and other waste material from the water"s surface of your aquarium, The 360-degree intake float is positioned consistently at the surface and the Flow control valve enables your to increase or decrease Flow rate to your filter, Can be used with canister filters, power filters and in-hood filtration, Removes dissolved organics from the surface and increases gas exchange, Firmly secures to the tank wall with 2 suction cups, Flexible hose and attachments included enable easy installation, Attaches easily to Wet/Dry or Canister filter, greatly increasing filter efficiency, Adjustable Flow control valve is included, Continuous siphon overflow efficiently skims organics and other waste material, Dimensions: 14, 5"" x 6, 5"" x 2"", SKU: RYLHC6180