Hydor Theo Shatterproof Aquarium Heater, 100-Watt & Ideal For 14 To 26 Gallon Fish Tanks, 8.9-Inches Long

Hydor Theo 100-Watt Aquarium Heater is a fully submersible; shatter-proof glass aquarium heater ideal for 14-to-26-gallon fish tanks; measures 8.9 inches long. Maximum Safety Aquarium Heater; THEO fish tank heater is shock resistant thanks to the patented PTC heating element and the shatterproof glass tube. Free positioning in aquarium with supplied suction cups; The Theo aquarium heater can be placed in the fish tank vertically, horizontally and fully submerged. Self-Control Limiting Technology; If fish tank heater senses abnormal functioning patented PTC heating system guarantees completely safe operation in case of dry running. Great Fish Tank Heater for All Fish Tanks; Universal aquarium heater for use in fresh water or marine water fish tanks