Suitable for marine and tropical aquariums
Easy to use
High precision electronic temperature control
For external use
5/8 inch hose
ETH Heaters are the first external heaters for aquariums with the exclusive PTC technology. The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. Designed to be used on return lines coming from canister filters or sumps.
Hydor In-Line External Heater - Original ETH - B0002Z7VQE