Used 9 1/4 inches and after 70 minute boil got 5.25 gallons
Total Water Needed 8.34 Gallons
Strike Water Temp 159 Fahrenheit
Total Mash Volume 9.24 Gallons
PreBoil Wort 6.93 Gallons
PostBoil Wort 6.25 Gallons
Into Fermenter 5.00 Gallons
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Start mash with 8 gallons water
With 10.05 pounds of grain, absorbing 0.125 gallons per pound, there should be 6.75 gallons of wort after mash. Boiling off 0.3 gallons per hour for 2:15, there should be 6.1 gallons after boil. Then turn off heat, stir for 10 minutes and into the container it goes.
Try setting induction burned to 155, stirring every 10 minutes to hold at 157.
**
Start mash with 7.3 gallons water
With 10.05 pounds of grain, absorbing 0.125 gallons per pound, there should be 6.05 gallons of wort after mash. Boiling off 0.3 gallons per hour for 2:15, there should be 5.35 gallons after boil. Then turn off heat, stir for 10 minutes and into the container it goes. Check the gravity. If it's 1.057, use 1.4L for starter and fill to 2L with sterile water.
With 7.3 gallons, try 150 next time for 157 target.
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5 gal = 6 3/16 inches
5.6875 gal = 7 inches
2:15 boiling with lid partially off brings down to 5 gallons
6.1 gallons set 135 on induction burner = 154 degrees
140 = 161?
attentuation 92 pct to get to 1.008