I have a fairly large pond, I searched for Bog info yesterday and did not come up with much. I would like to section off a part of my present pond and make a bog area. Can I do this in a large container? I have the big round weir we removed, it has a big hole on the side bottom where the plumbing went. It is deep enogh to sit on one corner of my pond. I ti about 20" deep and about 3' round. I really do not want to do it outside of the pond as many articles I have seen are. Thanks for all your help!