There is no need to treat and buffer freshwater. All you are doing is asking for trouble by doing that. I live in SD which has liquid rock from the tap and I have had 0 issues with my fish. Unless you are trying to breed specialty shrimp, the Austin tap is fine. I know because I lived there for 6 years. Rams were the worst choice in fish to introduce to a brand new tank that's not fully cycled though as they can be kinda sensitive depending where they came from.