Hi everyone! First post here. I live in far southwest Kansas and have a 12ft by 21ft by three and a half ft deep pond with a bridge over the center. It has a rock waterfall that runs into a small pool about 50 gal, it has a small stream that runs into the pond. I don't know how many fish I have last cvount was about seventyfive. A recent electrical problem burnedout both bulbs and ballast in my UV light so now I have green water!