Did you build a frame for the half or how have you mounted it? Got any photos?Plastic 55 gallon barrel, split longways down the middle. One half of which would serve your pond well as a bog filter. I used one on my 2500 gallon pond (both halves) which is actually small for the size of my pond, but Water is clear, and clean.
Looking to do something like this and was also in the market for ideas