Well my first problem was that the rain collector barrel I have been using as an upflow gravel filter tipped forward into the pond. This allowed tons of the gravel to fall into the pond, and of course a ton of debris. I tried to lift it out but it was too heavy. So I had to cut a big hole in the top and scoop out a lot of the rocks. I think this caused a small oranda of mine to catch a bacterial infection. The fish was dead before I noticed any problem. My plants ddidn't grow well, and I coukdnt even keep hyacinth from melting away. Then my UV bulb died so the pond has had a green tint for a couple months. I didn't do enough filter maintenance so I think when I finally did clean them i cleaned them too thurohghly which caused a cycle bump, which didn't help with the green water. I just ready for the whole thing to freeze over!