It is all better. We got a new fancy filter/fountain combo. I made fresh clean homes for all the water plants. The cinder block castle got scrubbed down too. It is all so clear and clean. The fish seem happy exploring there new clean space.
We had 9 fish. Skeletor and one of the gold fish must have been someones lunch, at some point this winter. Skeletor alone was about a $150. Koi, that is a pretty fancy meal! For now all is well in our little pond.