We've been working on the koi pond lately, trying to combat the dreaded "green soup" of growing algae that grows with the assisstance of the hot, summer sun. We've had one bog planted and just put in a second, smaller one. More plants is never a bad thing! I do love the sound of water running over the rocks in the big waterfall.
In this picture you can actually see some of the koi! It's really hard to take a picture of a fish swimming in the water.