We have 0 TDS on our RODI, there’s 3 live rocks in a 75 gallon tank. We have 3 firefish, a Valentini puffer, a Midas Blenny, a pistol shrimp, and a watchman goby currently. The tank is 7 months old. We feed reef plankton and rotate through Midas and brine shrimp and occasionally put the seaweed...