6 gallons strike volume. 6 g gypsum, 1.5 g cacl2. .6 g nacl, 1.95g 88% lactic acid
Based on boiling 5.70 gallonsliters at 1.051 for 30 minutes, this will decrease your wort by 0.50 gallonsliters, bringing your after boil OG to 1.055. You wanted an OG of 1.056. It looks like it will be under.