So looking for others who may have gone down this route, I'm considering ditching my DI stage and hoping to still achieve zero TDS water. I am currently running the BRS 4 stage with an inline tds meter, I get one TDS post membrane and of course zero post DI. The problem comes from running well water, it is very low TDS going in typically around 80 however the high CO2 blows through resin in around 60 gallons. I am thinking about ditching the DI and doing a dual sediment filter with a smaller micron rating and then finishing up in a carbon block. Has anyone tried this with Success?