Hydor® ETH Aquarium Heater, 300 W

Average Price:$63 —— Completely safe, Hydor® ETH in-line aquarium heaters take advantage of a patented thermal technology (PTC) that uses a polymer sheet to uniformly heat water, rather then metal heating elements encased in glass. The thermostat is mounted directly on the unit, so the heater shuts off when a low water flow situation occurs. The temperature setting is controlled with a dial (65–93ºF) with indicator light. Mounts in vertical position only.