Fermentation down to 1.001

Discuss all aspects of fermentation
Post Reply
MarkF_2703
Steady Drinker
Posts: 64
Joined: Thu Mar 23, 2017 6:42 pm

Fermentation down to 1.001

Post by MarkF_2703 » Sat Aug 11, 2018 12:34 pm

*solved* idiot home brewer can't read a hydrometer.


I have done an AG brew on a GrainFather, it was Sara's Japuir which seems quite a popular recipe, I have also been trying to brew this for a while now with various recipes. The recipe called for 2 packets of Nottingham yeast.

All went well with the brew other than having a poor mash efficiency, (66 deg mash with 75 deg mash out) down 4 points from predicted, ABV down from 5.4 to predicted 4.9.

Rehydrated the two packets of yeast and pitched into 22.5 litres of wort on Wednesday.

Dropped to 1.001 today, sample tastes bitter as expected, nice aroma and that Japuir citrus hit, bit dry.

Image

Trying to understand how the gravity has dropped so much, never pitched two packets of yeast before, no sign of infection, I thought there was only so much sugar for yeast to feed on, normally mash at 65 too. Any thoughts?
Last edited by MarkF_2703 on Sat Aug 11, 2018 1:24 pm, edited 1 time in total.

User avatar
vacant
Under the Table
Posts: 1936
Joined: Mon Aug 20, 2007 5:39 pm
Location: downstairs
Contact:

Re: Fermentation down to 1.001

Post by vacant » Sat Aug 11, 2018 12:59 pm

What SG does the hydrometer give for water?
I brew therefore I ... I .... forget

MarkF_2703
Steady Drinker
Posts: 64
Joined: Thu Mar 23, 2017 6:42 pm

Re: Fermentation down to 1.001

Post by MarkF_2703 » Sat Aug 11, 2018 1:10 pm

1.000, tilt and hydrometer are pretty much giving the same reading. just checked it I cocked up reading the sample its 1.010 :oops: which is much better, not worried about the tilt, as its only a guide, maybe has some krausen stuck to it.

User avatar
vacant
Under the Table
Posts: 1936
Joined: Mon Aug 20, 2007 5:39 pm
Location: downstairs
Contact:

Re: Fermentation down to 1.001

Post by vacant » Sat Aug 11, 2018 1:44 pm

Phew!
I brew therefore I ... I .... forget

Robwalkeragain
Hollow Legs
Posts: 357
Joined: Tue Jun 05, 2018 9:19 am

Re: Fermentation down to 1.001

Post by Robwalkeragain » Sat Aug 11, 2018 6:21 pm

I wouldn't put Nottingham past anything! It's huuunngrry!

guypettigrew
Under the Table
Posts: 1595
Joined: Mon Mar 22, 2010 7:10 pm
Location: Christchurch, Dorset

Re: Fermentation down to 1.001

Post by guypettigrew » Sat Aug 11, 2018 8:07 pm

MarkF_2703 wrote:
Sat Aug 11, 2018 1:10 pm
1.000, tilt and hydrometer are pretty much giving the same reading. just checked it I cocked up reading the sample its 1.010 :oops: which is much better, not worried about the tilt, as its only a guide, maybe has some krausen stuck to it.
Strange things, Tilts. I thought it was going to be the best thing ever but, having used it many times now, I've decided it's just, as you say, a guide.

It never gives a gravity reading which matches the hydrometer or refractometer at the beginning of a fermentation. It has to be recalibrated every brew. And I've no idea what the 'uncalibrated' reading on it means.

It's fun watching the rate the gravity drops at the beginning of the fermentation but, in truth, for the end of the primary fermentation I'm better off watching the rate of bubbles through the blow off tube.

Guy

MarkF_2703
Steady Drinker
Posts: 64
Joined: Thu Mar 23, 2017 6:42 pm

Re: Fermentation down to 1.001

Post by MarkF_2703 » Sun Aug 12, 2018 10:00 am

Its my third ferment with the tilt, its pretty much been within a point apart from this one, but as you say great to watch the action and for me the straight line at the end indicating its finished, I still get blow off but thats just CO2, will give this another 3 days to clear up check again then crash if its stable. Only having the ne fermenter its time in use can be the bottle neck for me.

chefgage
Hollow Legs
Posts: 492
Joined: Mon Mar 16, 2015 10:37 am

Re: Fermentation down to 1.001

Post by chefgage » Sun Aug 12, 2018 10:39 am

I find with the tilt the reading is way off at the begining and for a day after. If i calibrate the tilt to read the same as the hydrometer at the begining of fermentation i find then the readings at the end of fermentation are well of on the tilt.

So i dont calibrate it to read the same as the hydrometer at the begining and after about a day it starts to read the same as the hydrometer all through the fermentation.

User avatar
LeeH
Under the Table
Posts: 1632
Joined: Wed Jan 11, 2012 9:42 pm
Location: North Lincs
Contact:

Re: Fermentation down to 1.001

Post by LeeH » Sun Aug 12, 2018 9:20 pm

guypettigrew wrote:
Sat Aug 11, 2018 8:07 pm
MarkF_2703 wrote:
Sat Aug 11, 2018 1:10 pm
1.000, tilt and hydrometer are pretty much giving the same reading. just checked it I cocked up reading the sample its 1.010 :oops: which is much better, not worried about the tilt, as its only a guide, maybe has some krausen stuck to it.
Strange things, Tilts. I thought it was going to be the best thing ever but, having used it many times now, I've decided it's just, as you say, a guide.

It never gives a gravity reading which matches the hydrometer or refractometer at the beginning of a fermentation. It has to be recalibrated every brew. And I've no idea what the 'uncalibrated' reading on it means.

It's fun watching the rate the gravity drops at the beginning of the fermentation but, in truth, for the end of the primary fermentation I'm better off watching the rate of bubbles through the blow off tube.

Guy
The uncalibrated data you see is what the tilt is reading minus any calibration points you have added.

It arrives calibrated and that is what you can see in the 'uncalibrated' box.

Confusing...
To monitor my latest fermentation 27/10 click here
To view my new AG build click here
Keg 1: Berliner Weisse
Keg 2: APA
Keg 3: Stout (Nitro)
Keg 4: Empty

Post Reply