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Just tested calibration and it's perfect. I'm completely stumped. Double crush gets 68% efficiency. Grains fresh. Using same water and grain supply as guys down the road who are getting normal results.

Has anyone noticed any calibration issues with the controller on the GF? I've also not been able to get my efficiency over the mid 60s. A double crush yielded 68%. The only thing I can think of is that their is a calibration issue. Any views or experience on this?

Thanks Parks and HBHB. Some great input. Been using brew house efficiency on Beersmith 2. I think it's down to milling and possibly increasing the sparge temp to 80. Appreciate your help.

just wondering what efficiency you guys are getting from the GF....I follow the instructions in the manual to a T (60 minute mash at 67C, 15 minute mashout at 75C, sparge at 75C per GF calculations) I cant get over 73% but have heard of people getting 80% with the GF...any idea why?

I've been wondering why my brews on the GF are coming out so bitter...been aiming for 35IBUs on Beersmith and they're coming out closer to about 70/80. I've figured that its caused by adding loads of hops at 0 mins left of boil (50g-75g). Beersmith shows that this adds, no IBUs, however, the...