Result

Now it is spring and we have had a couple of sunny days. Because the net over the pond wasn't easy to use in case of catching a fish, another hobbyist made two hatches which I can easily take of when its needed , but provide enough safety for my children. On a sunny day the pond looks like this!!!

To protect the pond in winter I took the necessary precautions. every year I made something that looked like a tent with and this year I took special material. When I install this over my pond its about an hour work. Also I will be placing this same material over the filter so this will be protected too.

Now its already proven to my satisfaction as the temperatures do not fluctuate more than 0,5 degree per day