So I decided to run a few tests on freshly made water today to see if maybe that could be a cause of some of my problems, and wouldn't you know I came back with .08 phosphates! So I was thinking of adding 2 canisters to my RO/DI unit; one would be an extra DI resin canister and the other would be a phosphate reduction. What do you guys think? What could I use to reduce phosphates in fresh water?