The Aqua Zonic Eco Submersible Aquarium heaters for fresh or salt water use are a full automatic and adjustable aquarium heater. Automatically maintains temperature (17-30 Degrees) Reliable and highly effective. Temperature dial is easy to read and the glass tube is highly resistant against heat and Shock. The visible on/off indicator lamp is easy to view.Totally submersible in tank and attached to aquarium through adhesive suckers and clips allowing for easy installation .
