I am getting stationed in Houston this upcoming summer and have been thinking about putting a pond in when I do. I was wondering how I can determine what my temp would likely be though. Ideally I'd like to have cichlids, my thought being Texas cichlid and some other cooler temp cichlids should be able to survive the winters? I know the Texas cichlid is from a warmer part of Texas. My plan was to insulate the tank very well and have some heaters in it, but I would want to leave the fish outside and wouldn't want to spend an arm and a leg heating it. Any thoughts if this would be possible