Hey there. I live in southern Ontario Canada and I have a small pond, about 400 gal, 1500 liter. Currently have 7 Comet fish bit I will be cutting it back to 4. I was thinking about making a bog filter and was looking for some advice on how to begin. I currently have a filter with UV, see pics. Would like something decorative so feel free to post pics of what you have just to give me ideas.