Hey just thought I'd put my two cents . . . Most people use RO (reverse osmosis water). In order for you to get RO water is to buy a $300-$400 machine that will convert your tap water to a reef friendly water. But like I said the water that I get from Superstore or Save on is filtered and also says purified using reverse osmosis technology . . . But I mean tap water ain't bad . . . But I'd rather not take any chance =) . . . Tap water has chlorine and some metals in the water. Chlorine kills fish and metal substance will destroy your inverts (corals and invertibrates)
