Oxygenating "Big Beers" with Pure O2 in wort

[Ciderhead]

nope good guess tho
its 001 which i brought back from the dead and clearly its not dead

Yeast orgy




My 004 on the right 14 hours after carboying has just blown off 

[Ciderhead]

Huh?
"the trub that has settled during the first period of fermentation will be left behind"

Read mine in reverse to what you have read. I phrased it very badly.

gotcha

[Ciderhead]

And as Ciderheads blow off looks like it was going to need a blowoff of its own Ciderhead was beginning to question the merits of oxygenating with O2 FFS.




TT

[Ciderhead]

Skimming, you mean like washing?
I have a plan for the 001 alright, but after that RIS which is starting at 1095, the 004 will be a basket case.
Anyway to get back on topic it was 60 and 90 secs shots this time, next time I'm cutting back.

TT

[Rossa]

Breweries who use conicals can't skim so they tend to take a pitch from the bottom. Not so fussy apparently, according to a friend who works in a big brewery in America.

[Ciderhead]

Kaboom, I lost 4-5 litres from the RIS in total this morning all through the blow off and made a lovely bubblebath in my fridge, at 9.8% it was never going to be a chugger and normal service has now resumed so its not a disaster but seriously folks never had fermentation like that before so there is something in this O2 aeration.
 

[Shane Phelan]

Too much maybe O2 maybe?

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[Ciderhead]

Was thinking that but I have had blow off before just not as active to start. I also had good starters on these 2 as well.
Even with it set at 1L a minute I was being conservative giving them 60 and 90 secs respectively
Next standard brew i will give my 1040-1050's only 45 secs.
I am wondering also is there more oxygen going into solution with a stone which is 0.5.
Anyways I will know for the next one I do which is in a couple of weeks time.

[Hop Bomb]

Maybe you need more head space in your fermentors?  Im using 30 litre kegs with 20 litres in each.  Thats 10 litres of headspace & my 1.067 IPAs krausen is still breaching the carboy cap. (aerated with pure 02 - 2 lpm for 30 secs).  That jar of yeast was a jar of starsan. Defo gona start top cropping if this is gona be par for the course with 02 aerated beers.



* The keg has asked for his face to be disguised to protect his identity.

[Hop Bomb]

Any benefits to a slower cooler start? Fridge is at 18c currently. Whats the core temp inside the fermentor I wonder?

[Hop Bomb]

Im not bothered about the quick start. Im not losing beer through the blow off like CH is.  Im 2c under the lower limit for wlp001 already. Surely Im in no danger of off flavours?

[Ciderhead]

White labs give very narrow temp windows, the gits, but fridge set to 19 will be bumped to 20 tomorrow.
Both were at 19 to start.
I was measuring the temps with Infrared beam that Brenmurph pointed me to on ebay(one of the best things I ever bought thanks Bren)
The RIS 2.5 above where it should be, the Pale is 1.5 above where it should be.
I think strong fermentations are better than chuggers on my RIS certainly.

[Ciderhead]

It really depends what you are measuring it off, nothing shiny.
twice a year my stc's, willhi, infrared and mercury's all have a step bath in the HLT from 20 to 80 and the only one I have had to constantly feck with is one of the STCs by about a degree in the 70-80 degree range usually.

[Ciderhead]

Im not bothered about the quick start. Im not losing beer through the blow off like CH is.  Im 2c under the lower limit for wlp001 already. Surely Im in no danger of off flavours?

think you are right, just now putting measures on sightglass, not enough head space.