no, r/o water is the best. i started with well water and have since changed to r/o water. well water contains bad things, just like city water. r/o water IMO is the purest. talk to your LFS about r/o water and what is required (chemicals to use) when using r/o water.
I currently use r/o water, buff with 8.3 (when needed), and add solid calcium chloride/ and of course salt.