We have a cistern in our basement that we are no longer using. It still has water in it. My husband wants to drain the water and knock out the cistern in order to make the room next to it larger. My question is in doing this will we be dealing with mold in that room in the future? Also what would be the easiest way of tearing it out and remodeling that area? I just hate to start working on it and not being able to complete it.