This Pond Heater from Velda is great for keeping your fish healthy in the winter.
When it is frosty the heater will keep a small part of the pond free from ice. This is important to let toxic gases escape from the pond. Available in a 300 watt model for up to a 5000 litre pond.
TUV/GS certified and has the CE mark
10m cable
The heater is supplied with a built in micro switch to stop it from overheating