That acid lowers the alk rightHere is my recipe for perfect acropora/SPS IO.
44 gallon brute filled with COLD RO water. Add 50g bag of IO and two TBSP of dowflake. Mix. Add 20mls of Muriatic Acid. Heat and let mix for another few days. Comes out like 1.026, 7.0 alk and 425 calcium.

