Low efficiency? How was the crush? ph? I mashed last night at 67C for 90 minutes, mashout @ 75C for 10, and got about 85%. One thing on wheat is you really need a rest at 40C.
How is your insulation? Holding temp ok?
Some report lower eff. with larger batches too.
Last edited by tektonjp; 09-06-2011 at 03:15 AM.