THINGS NEEDED! All together these supplies come out to just around under $150 • Water filter housing for 2.5"x10" cartridge (x2) https://rb.gy/cbq6 • 2.5"x10" empty water cartridge (x2) https://rb.gy/4kc7 • 3/4" NPT brass pipe fitting (x2) https://rb.gy/y9ez • 3/4"NPT middle piece (x1 middle piece) https://rb.gy/kk9q • CR Spotless Deionizing resin (x1) https://rb.gy/tabj