John K.
400 micron bag for 20 gal Blichmann recirc BIAB.
I purchased a large 400 micron bag for my 20 gallon Blichmann kettle, complete with circulation pump and Blichmann’s BoilCoil element. The 400 micron bag fit the kettle perfectly, containing the grains while allowing the mash to be circulated through the kettle. Mash efficiency was 78%. The bag held up perfectly against the 240V/30A BoilCoil during the 152°F single infusion mash. The element pulsed on and off as needed to maintain mash temperature, with no burning/damage to the bag. I did not attempt to raise the temperature while the bag was in contact with the element. At the end of the mash, the bag was easy to pull and clean.



