Has anyone ever insulated a field water tank?

[(\^/) Lotuspoint Joe (\^/)]

I have access to electric as my horses are right outside my front door.
I not sure if these heaters would run of a 12v battery as these heaters are run using a 13amp fuse.. Sure it could be tried

[laura]

Hi jo

what wattage aquarium heater do you use for a trough .. i went to look on ebay and there are 100-300watt versions. If we can hook it into our mains leccy fencing would be brill and cheap !