I use pure RO and add back the Ca/Mg with Seachem Equilibrium. This allows me completely control of what is in my water. I found the tap to be a mixed bag - who knows what the city is doing with the water and when? I also gave up testing long ago. IMO RO is well worth it. Of course I use RO/DI for my Nano Reef and a Drinking adapter for RO drinking water - the more you can use it for, the quicker the payoff.
check out the Typhoon III Extreme from AirWaterIce.com if you are in the market. I love mine
__________________
|