Hydor ETH 300 In-Line Heater 300W (16mm - 5/8" hose)
SKU #: HD08110
The Hydor ETH external in-line Heaters are the first aquarium heaters designed with the exclusive PTC technology. The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The ETH must be used in a vertical manner for correct operation. For most common application, it is designed to be installed on return lines coming from canister filters, however the ETH is easily adapted for use in almost any situation where heated aquarium water is required, such as with wet/dry sump pumps.
The ETH heats with high efficiency by means of an internal heat pump system that avoids temperature variations. For use in freshwater and marine aquariums. Fits most canister filters such as the Hydor Prime, the Rena Filstar, Eheim canisters, and the Fluval canisters with the use of a short section of tubing to complete the connection.
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