Tony, that's the 40g. It's 36x18x15 (I think). Yellow tang is about the size of a loonie now, but was the size of a quarter when I got it. No split yet, I guess it's the only thing not stressed these days in my tank
It's about 9 inches across when fully expanded, and it eats a good chunk of prawn every day.
Marty, I got that bottle from the LFS. It came in with a rock shipment. I thought it looked cool, and it does add to this rose's tank.