Are you sure you want a fish tank? Not to derail your plans, but the amount of effort to clean a tank out, put fresh water in, making sure it's the same temperature as the previous batch of water...I'm too lazy for it. :lol.
I've always wanted to try playing goalie, but I'm afraid of tearing my groin or something if I go 100%. Closest I've done is stand in front of an empty net and get into a stance.
Not to mention potentially breaking it as you through furniture around when your team loses in the final minute of a game.