Eheim 50 Watt Thermocontrol Aquarium Heater

The EHEIM 50 W aquarium heater is part of the adjustable thermocontrol range. It suits aquarists who need to set their own target temperature for a freshwater or marine aquarium instead of relying on a preset heater.

The glass-bodied heater can be fully submerged, with an operating light showing heating activity. Its temperature setting can be recalibrated, and automatic dry-run shutoff adds protection if the heater is unintentionally exposed.

Plan the installation around physical clearance, the marked water level and adequate circulation. A 50 W label describes heating power, not a guarantee for every tank of a particular size: room temperature and the aquarium's heat loss also matter. Check the water with an independent thermometer after setup and during seasonal temperature changes, and follow the manual when unplugging or removing the heater.