Prior to making a purchase it's a good idea to find out more about your water source. I believe you folks in the GVR are fortunate to have very low TDS from the tap. Info should be available on line from your water utility or city. Whether your water is chlorine or chloramine treated will determine if you need an extra carbon stage. A good quality 75 gpd RO membrane could get your TDS down to 0 and you may not even require a DI stage. A water pressure gauge is a good option as is a dual TDS meter.
I use RO water for coffee, tea, cooking, wine/beer making as well as making water for my tank. The unit gets a good workout!
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