Originally Posted by Boegman
What gap works with the MM2?
Using factory gap on my MM2-2.0, four batches in. Efficiency looks good so far. Don't see a huge need to fiddle with it. All single batch sparge.
Batch 1 - 75.5% mash eff on pre-boil 1.044 (didn't sparge enough)
Batch 2 - 91.4% mash eff on pre-boil 1.038 (very heavy on maize in grain bill)
Batch 3 - 82.0% mash eff on pre-boil 1.039 (starting to get the feel for it)
Batch 4 - 72.3% mash eff on pre-boil 1.059 (feeling comfortable now)
I think Batch 3 and Batch 4 are what I'm going to see here on out. I expect efficiency to continue to drop half a percent for each .001 gravity, so I'd expect 62% mash efficiency at 1.080 pre-boil.