Dude, having an awesome display tank ina shop does wonders for bussiness and can also be the thing that brakes you. I just can't understand why more shops don't understand how simple that is.
When one comes into a shop and sees a display tank, it says tons for the owners and employees. If it a nice set up, it says you know what you are doing, it says you know how to keep things alive and well and that you are likely to tell me how, it says you know about good equipment and can point me in the right direction, and it says so much more. It is enchanting, inviting, and tempting to say the least. At the same time, a crappy tank with stuff being replaced all the time and tons of dead corals from last week and the week before says completely the oppsite to the above said.
Keep it there and start a new system at home. You won't regreat it.
Alberto