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We're currently harvesting/re-pitching based off weight, and I was curious as to what amount of "normal" growth to expect from harvest to harvest. We can't afford a DO meter (yet), so I've been somewhat tweaking our O2 flow-rate based off the growth we're seeing. Only problem: I don't know what's "normal" or "optimal".
I know the real answer is going to be "it depends", but is there a decent rule of thumb to look for? For example, I recently re-pitched 70# (generation 2) of lager slurry into a 20 BBL batch and was able to collect ~130# today even after dumping a gallon or two of the dead/trub covered cells. Fermentation seemed normal and the beer tastes good. Is this too much or reasonably normal?
Cheers and thanks in advance!
I know the real answer is going to be "it depends", but is there a decent rule of thumb to look for? For example, I recently re-pitched 70# (generation 2) of lager slurry into a 20 BBL batch and was able to collect ~130# today even after dumping a gallon or two of the dead/trub covered cells. Fermentation seemed normal and the beer tastes good. Is this too much or reasonably normal?
Cheers and thanks in advance!