Let's pause for a moment. Pitts, I've read the responses and honestly don't think any of them are rude. It's hard to hear it's not a good idea to do something, especially when it's something you really really want. In this hobby, I've learned I will hear what I don't want to. I've also learned to heed advice from others. Please consider this. I may to new this forum but know in general the people in this hobby want you to succeed. They really do. And many times advice is given, and not taken, and some time later there is a post asking why is my fish sick, my water parameters won't stabilize, etc, all because the advice was not taken and at times, people get defensive. Tangs are susceptible to disease when stressed. This can come from food (lack of variety), picky eaters, competition, and not enough room (I'm sure there is more but you get my point). The advice provided is saying a 70 is min. This is based on experience from multiple sources. If you proposed a 65 or 55, ok, but not a 29, it's not a good idea.