What fish are you keeping, what is your tap ph, and why are you using ro water. If you aren't reconstructing the water(adding some buffer, etc) you are setting yourself up for disaster.
Most of us here believe that stability is the most important part of keeping fish. "ideal" water conditions are great, but stability is the key.
Most of us here believe that stability is the most important part of keeping fish. "ideal" water conditions are great, but stability is the key.