I just want to second what LLBeanJ has been saying to you regarding minerals and PH.
PH was perhaps the last thing I really paid attention to but since I have increased my efficiency to 80% +. I am a full volume mash guy too.
I also use RO water and get mine from one of those Glacier...
Gavin... dumb question here.
When you say slurry you mean everything at the bottom yes? I know stupid question but I am most interested in simplifying the yeast harvesting process and I have read several threads where the definition of slurry is questioned.
BTW I read your BIAB setup and...
A question about fermentation...
We just brewed a 5 gal version last night and pitched US05. It is sitting in the primary at 68F and already yeast is kicking.
Here is my question... I have to go out of town for 10 days after about 9 days in primary, should I leave for the extra 10 days...