Amazon.com: Submersible Aquarium Heater with Thermometer, LEDGLE Fish Tank Heater for 3 to 5 Gallon Betta Tank, Saltwater or Freshwater Aquariums, Turtle, Auto Intelligent LED Digital Display : Pet Supplies
Amazon.com: Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt, 2-10 Gallon : Pet Supplies
Contour Desktop Kit | Marineland®
GloFish Half-Moon Bubbling Aquarium Kit 3 Gallons, with Blue LED Bubbler - Walmart.com
Amazon.com : Koller Products AquaView 3-Gallon Fish Tank with Power Filter and LED Lighting : Pet Supplies