Well just filled my fermeter with 20.5 l of wort (about 5.5 gal) OG 1070 didn´t hit my limit but close enough and I end up with 1 liter more than what i expected. Mash efficiency was around 87% brewhouse efficency was lower due to the absorption of hops (this is a hoppy IPA) 76% measured. I think that maybe I can fit half a kilo more or so in the malt pipe. A little tired now time to clean up!! See ya!!!
Oblivious brew, what was your total grain weight and initial water volume on this brew? Also, how fine/coarse are you grinding your grain? Finally, are you adjusting your mash PH? Do you use RO water or tap?