Mini Aquarium Heater

Mini 7.5 watt aquarium heater is great for small aquariums from 2-5 gallons. Helps increase temperature by a few degrees (4°F-5°F) above room temperature. The extra small, flat size (2½” x 5½”) allows you to place it out of sight. For use in glass or acrylic aquariums. Fully submersible and UL listed. Your heater should be between 3 to 5 watts per gallon of water.