Ok I am using Ro/Di water. My alk is at 140, I have roughly 125 lbs rock between DT and sump, Using crushed coral subsrtate, have 2x 750gph circ pumps, 1 1250 gph circ pump and 2 nozzles returning from a 1200 gph sump
inhabitants are Naso Tang, Yellow Tang, 2x bengi cardinals, 2x spotted...