I am looking at purchasing a new tank and I am looking at a used one. The guy said it was a 178 gallon curved glass (no corners). but when he gave me the dimensions 60 1/2" x 25" x 26" that did not seem right to me. sounds more like a 150 gallon. Any Ideas? Also I want to be able to have some soft corals like shrooms and xenia and stuff like that. With how deep it is does anyone have any suggestions on lighting and where to get it.