I am trying to think of how to add a bog to my current pond. The area that I am thininking is to the RIGHT of my skimmer box in picture. Hubby said it would be neat to have a lower area there when we built the pond but it isn't all that pretty and the fish can go in and I do not want them getting eaten by critters so I was thinking why not add a bog. How would I go about doing that? What would I need? Liner? A second pump? It is just starting to warm up here so the fish have been out the last 2 days and I have pond fever so please help. Thanks in advance. Amber