Well, you may have read on my other post that I finally took some action, after I only have four goldfish left. One is injured. A big black plastic pot, the kind trees come in was used. I put a good sized hole at the top of the pot, then turned the pot upside down, then sat it in the pond close to the wall of the pond. Then I put cement blocks on top. When the Heron comes, the fish swim inside the hole, then up. The Heron can't get them. Seems to work fine so far. What do you think?
Arum