The Aquael Ultra Heaters are designed for the aquariums of today. This heater has a power of 50 watts and is suitable for aquariums with 15-50 liters.
The newest Sera aquarium heaters are specifically designed for low aquariums. The 50 Watt version is suitable for aquariums from 25-50 liters.
With the Eheim thermocontrol-e heating element your fish get the right temperature even more precisely - in every aquarium. For aquariums from 25-60 liter.