If im getting full conversion of my grains according to iodine test then how come my software is off when i say 85% efficany. its always higher then what i end up with. im resurculating through out the whole mash at 152F with a digital controler and heating element setup. then raise up to mash out to 168F. run off everything. sparge. resirc for another 10 min or so and run off again. i could ttry another sparge method but i was curious why i wasnt getting the efficancy. thanks everyone.