Will be interesting to see how this goes. I tried to keep one for a year or so in Hawaii in the mid 70's. I frequently was scuba diving or snorkeling on weekends and thought I could save costs by getting free material for the project. Of course everything was different then with out the Internet to source supplies or knowledge, I would have loved to have had that. I found that it was a maintenance nightmare, way too much time involved with the other things I had to do since I owned my house and landscape management and home maintenance could already be considered a full time job. University of Hawaii had courses that would have helped but mostly one bought a book and relied on asking the local pet shop for advice, and who trained them? It was fun for awhile but it was expensive, I got a 55 gal tank mostly because I had a passthrough between the kitchen and what was a living/dining room. I wanted the tank to be a living wall to fill the space between the two rooms. That was a great concept but a visible embarrassment when it turned green and started to smell swampy. I learned a lot, besides that it wasn't for me and not to try that again. Some of the things I remember is that little fish grow to a size proportionate to the size of the tank. 55 gal is a LOT of H2O and you can grow sharks. That wasn't going to happen to me because I kept introducing diseases with the wild rock, coral or fish I introduced from time to time. Also, fish poop a lot. And they eat each other. And you can't go to Maui for a week and expect things to be ok when you get home.. The video posted was really great, wish they had given the vet lab fees. Here's one I found I liked:
Hope you keep us informed, will be fun to watch. It should be less expensive than the stock market hobby has been for most of us too. Good luck!