I am not in a position to where I can add an RODI system to our house....but don't want to have to go to the LFS to get RODI.....so I was wondering if this might work I can get drinking water from our local "pure water" store. We use it for our main drinking water. I have a TDS meter and it registers "0" tds. If I were to get that water and then pump it thru a stand alone DI resin....would that be the same as an RODI system most of you have in your homes? My assumption is that there would be little to no rejection because it is already at zero TDS....and if it did go higher the DI resin would knock it down to zero effectively. All I would need is the DI membrane, two buckets a pump to push the water from one bucket thru the DI membrane and into the other bucket. If this would work, what type / size of pump would I need to get to push the water up to 40-60 psi?