Oase BioMaster Thermo 250 Canister Filter with Built-in Heater @ Fish Tanks Direct
MarineAndReef.com: Is an Aquarium Canister Filter Right for You?
Aquarium Canister Filter for up to 100 Gallon Fish Tank - 370GPH, with UV Sterilizer 3 Media Trays Spray Bar External Canister Filter for Fish Tank - Walmart.com