The Grreat Choice Aquarium Mini Heater is completely submersible and works well with marine and tropical aquariums. Simply place in your aquarium and the heater will operate in any position within the aquarium. Only at PetSmart.
Features: Completely submersible
Tank Size: for 2.5 gallon aquarium
Caution: Do not run dry. To avoid injury, follow the safety instructions in the enclosed instruction guide.