Gypsum Calc. Chloride Epsom Salt CaSO4 CaCl2 MgSO4 0.5 3.4 1.2 0.6 3.9 1.4 water 6.75 target 5.6-5.8 5ml acid = major error 3.something. sparge 1 ml at a time going forward
Based on boiling 15.75 gallonsliters at 1.062 for 90 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.068. You were planning on an OG of 1.068 so you are right on track. Nice job!