Patrick's idea for a combination of a fishtank and a fireplace. This idea was first introduced in Episode 143. Listeners continued to call in to suggest upgrades or critique Patrick's current version of the fishtank fireplace. The structure and design gradually changed over several episodes. The basic concept was a fireplace inside of, or surrounded by, a fishtank. One specific topic that the listeners would comment on was how to keep the water in the fish tank from heating up and killing the fish if a fire was meant to be right next to it.