CaSO4 CaCl2 MgSO4 Gypsum calc chlor Epsom 1.6 4.5 3 1.5 4.2 2.8 11.5 pre sparge, stop at 3.75
Based on boiling 12.20 gallonsliters at 1.060 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.065. You wanted an OG of 1.068. It looks like it will be under.