Features:1. Thermal spraying glass, speed up the heating process, higher efficiency. 2. External design, easy to install and doesn't occupy space in the tank. 3. Two sensors to exam the temperatures of water inlet and outlet. 4. Auto power off safety...

    150w/300w/500w In-Line External Heater AQUARIUM HEATER - 150/300/500 WATT 1/2"-5/8" (500 Watt 1/2"(12/16mm) Hose)

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