OK to use RO/DI water on FW tanks?

[Keri]

If you use RO water I think you have to use a productcalled "RO Right" that replaces some of the essential minerals the fish need. (In saltwater the salt mix does this) If you have really bad water it's not a bad idea to use RO & RO right, otherwise tap wayter with dechlorinator is usually fine for most fish. HTH