So I am trying to figure out why my Calcium and Alk are so high. I measured my RODI freshly mixed water with InstantvIcean Sea Salt not reef salt. I was wondering why it seemed that my reef tank Mg, Alk, and Calcium are out of whack. My mixed bucket with consists of 20 gallons of RODI salt and water mix shows an Alk reading of 18.9, Ca at 680 and Mg at 2340. Now it would appear that regardless of my salt that I am using it just seems to have elevated trace elements as I’ve used Instant Ocean Reef Salt before and now back to Instant Ocean. Can anyone help me figure out how to get this lowered so my perameters read better numbers that are not so elevated.