I just wanted to say that Chris's tank does truly look better in real life(I've seen it). It is truly the cleanest tank I have ever seen and the corals are all incredibally colored.
As for the tap water thing I have always only used tap water in Edmonton and Fort McMurray and never had problems with anything. My corals have always loved it. I vouch for tap water as well.
Then again does the ocean use RO/DI water? Just kidding
