As you can tell, my two conflicting LFS, have me throughly confused! One insist that I start immediately using R/O if, I expect to be successful with my reef tank (currently geeting to a position to start adding corals). The other says tap water will work just as good, as long as I dechlorinate it before water changes, top offs, etc. One LFS will only guarantee his livestock,(which by the way looks really great), if I make the change to R/O. Any input would be appreciated.