Primary Fermenter Blew up!

[KW9375]

I brewed an imperial saison yesterday. OG: 1.086, so I pitched 2 packs of dry yeast (Belle Saison) in the glass carboy, put a bung in with an airlock and blow off tube to a small jug with sanitizer in it. Put it in temp controlled chest freezer with temp set to 86*F (yeast packet said 86-92). This was last night about 9pm. This morning I open up the chest freezer and the bung/airlock had been blown out of the carboy and there was gunk all over. I crammed the bung back in for now but had to leave for work. I'll run back home at lunch and check on it, but I wonder what caused that and what, if anything, I lost from this? I'll attach 2 photos. You'll see a coffee mug warmer in there - that's my heat source. There's also a jug of water for the temp sensor to my STC-1000 temp controller. Any ideas?? Should I pitch another pack of yeast or just wait and see what happens? I'm wondering if it was just CRAZY active due to high OG, 2 packs of yeast, and high fermenting temp?

 

[m00ps]

No reason to add more yeast. They are obviously doing very well from the vigorous fermentation. Just leave it to ferment out and itll be fine. Generally, I let my saisons and belgians free rise for 24hrs before cranking up the heat. Sometimes I find the yeasts can produce fusels that are unpleasant and take a while to fade away if you start them right off hot

 

[mdindy]

I don't know why the blow off didn't work, maybe it was filled all the way to the top. I have had this happen a few times, your beer should be just fine.

 

[cannman]

hmmm... with that air lock, use a smaller diameter tube... you wouldn't have had the blow off that looked like chili night's aftermath all over your fermenter...

 

[KW9375]

No reason to add more yeast. They are obviously doing very well from the vigorous fermentation. Just leave it to ferment out and itll be fine. Generally, I let my saisons and belgians free rise for 24hrs before cranking up the heat. Sometimes I find the yeasts can produce fusels that are unpleasant and take a while to fade away if you start them right off hot

Good to know - I may try that next time. I was a little nervous about starting it out that hot, but was trusting the yeast pack info (86-92).
The wort was not filled to the top of the carboy and the tube I used is what fits the airlock. I've used that setup quite a few times and haven't had this happen yet. Oh well, live and learn.

 

[d3track]

Those air locks have a cross on the end, and it gets clogged easily. Cut that off, and should be good to go.

 

[KW9375]

Those air locks have a cross on the end, and it gets clogged easily. Cut that off, and should be good to go.

Great idea! Will do, thanks!

 

[Yuri_Rage]

I cut that cross off of all of my airlocks - it's a recipe for disaster.

 

[KW9375]

I wonder if I should cut the temp back to 75-80 for a day or two and then slowly bring the temp back up to 86? Or maybe it's too late for that. It's been 13.5 hours since I pitched dry yeast and put in freezer.

 

[cannman]

what yeast did you pitch?

 

[brew_ny]

WOW!!!! that indeed did blow up

 

[d3track]

I wonder if I should cut the temp back to 75-80 for a day or two and then slowly bring the temp back up to 86? Or maybe it's too late for that. It's been 13.5 hours since I pitched dry yeast and put in freezer.

If it recommended to be 86, keep it there. Dropping it 10* is kinda asking for a stuck ferment

 

[KW9375]

Belle Saison. Dry yeast. 2 packets.

 

[fuzzy2133]

Good to know - I may try that next time. I was a little nervous about starting it out that hot, but was trusting the yeast pack info (86-92).
The wort was not filled to the top of the carboy and the tube I used is what fits the airlock. I've used that setup quite a few times and haven't had this happen yet. Oh well, live and learn.

Or use a tube the fits the inside opening of your car boy. Takes a lot of to plug 1"+ diameter.

If it recommended to be 86, keep it there. Dropping it 10* is kinda asking for a stuck ferment

+2 on this. IMO might be able to drop 1-2 degrees but 10 is asking for yeast to go dormant.

 

[brewprint]

Yes why use an airlock at all? There is tubing that is a snug fit for the carboys so no airlock is needed. I've had a lot of trouble with those bungs even fitting snug...no matter what kind. Last time I took a carboy handle with an airlock and used a zip tie to keep it from popping off.

 

[cannman]

Belle Saison. Dry yeast. 2 packets.

My trusty guide says no more than 63f for that style with that yeast.......

 

[KW9375]

Good idea on skipping the airlock altogether. However, the whole bung/airlock blew out, so I'm not sure if it would have mattered.
As far as fermentation temp for this yeast...the packet itself says 86-92. My LHBS said at LEAST 75-80. ??

 

[blizz81]

Good idea on skipping the airlock altogether. However, the whole bung/airlock blew out, so I'm not sure if it would have mattered.
As far as fermentation temp for this yeast...the packet itself says 86-92. My LHBS said at LEAST 75-80. ??

You can also get vinyl tubing that is a tight fit for the mouth of a carboy. I forget what size works, I think I just took my carboy into Home Depot and was "that guy".

 

[KW9375]

Went home at lunch and checked on it. Everything in tact. I'm attaching a video showing some serious activity in blow off jug!
LHBS assures me this happens with high gravity beers, said the beer should be fine, and recommended next time using a 1+" tube directly in the top of the carboy...just as some of you guys also recommended. Thanks guys!

View attachment IMG_2696.MOV

 

[d3track]

Good idea on skipping the airlock altogether. However, the whole bung/airlock blew out, so I'm not sure if it would have mattered.
As far as fermentation temp for this yeast...the packet itself says 86-92. My LHBS said at LEAST 75-80. ??

I think I see the confusion - the 86-92 is for rehydrating, and fermentation should be above 63.

Most saison strains give the most desirable profiles in the 70-80 range, so your 86 may be interesting, possibly more fruity/bubble-gummy.

 

[KW9375]

Well crap! Fruity/bubble-gummy is definitely not what I was going for. Maybe I'll back off the temp to 84 from 86. Don't want to drop too much too quick I suppose. I wonder if it would be worthwhile to trim back 2 degrees each day until I reach 80?

 

[ten80]

The problem here is that Belle Saison yeast is a beast and 2 packets of it at 86F resulted in excessive activity and probably clogging of the blow-off with krausen.

I usually start this yeast around 70-75F and ramp up to 80-85F after fermentation is 2/3 complete, otherwise the fermentation gets going too rapidly!

 

[KW9375]

Should I start scaling back the temp, slowly, or is the damage done. Should I just leave it alone? It's been 20 hours now since I pitched the yeast. Thanks.

 

[LandoLincoln]

Went home at lunch and checked on it. Everything in tact. I'm attaching a video showing some serious activity in blow off jug!
LHBS assures me this happens with high gravity beers, said the beer should be fine, and recommended next time using a 1+" tube directly in the top of the carboy...just as some of you guys also recommended. Thanks guys!

Using part of the 3-piece as your blow-off setup is still presenting quite a serious bottleneck to your operation, there. That small opening could still clog up and give you another beersplosion, even with the little cross removed from the bottom of the 3-piece airlock.

My recommendations for the future:

1) Fermcap-S helps a lot to keep the krausen from going all crazy on you. Won't guarantee another blowout ever, but it will certainly go a long way.
2) Take a universal stopper and drill the hole out bigger so that the blowoff tube fits snugly inside, bypassing the 3-piece airlock bottom piece.
3) Or better yet...get one of the purple carboy caps (6.5g carboys) or one of the orange carboy caps (5g carboys) and connect your blowoff tubing to that.

 

[fuzzy2133]

Should I start scaling back the temp, slowly, or is the damage done. Should I just leave it alone? It's been 20 hours now since I pitched the yeast. Thanks.

IMO most of the damage is done. You can try bringing the temp down in an attempt to control new fruity/bubble-gummy flavors.

If it was my brew I would still bring the temp down 1 degree each day into the upper fermentation temperature knowing the risk of stalling the fermentation.

 

[KW9375]

Thanks LandoLincoln. Those are good tips! I'll fix my blowoff system before next brew day.
Fuzzy, I'm leaning more towards dropping a degree per day. If it does stall, would I just pitch one more pack of dry yeast?


In Secondary: Belgian tripel
In Primary: Man Dog IPA (original recipe)

 

[jbaysurfer]

Thanks LandoLincoln. Those are good tips! I'll fix my blowoff system before next brew day.
Fuzzy, I'm leaning more towards dropping a degree per day. If it does stall, would I just pitch one more pack of dry yeast?


In Secondary: Belgian tripel
In Primary: Man Dog IPA (original recipe)

Truly stuck fermentations can't simply be restarted by pitching more yeast in most cases. You risk a beer that never finishes out. 1 degree a day right now til you reach 80 isn't going to undo the esters you've already created.

I'd let it ride. Saison yeasts were developed to use in the French/Belgian country side in the summer time before refrigeration was widespread. Nobody could control the weather in those days, so let it do what it's going to do at this point rather than risk it stalling out. Some Saison strains are prone to stalling too btw..particularly when temperatures decrease.

JMHO of course.

 

[fuzzy2133]

What Surfer said on stuck fermentation

 

[jbaysurfer]

I am thinking it will not stall. If it does gently stirring and bring the temp back up a couple degrees should get the yeast going again.

And I have not used this particular yeast, so I happily defer to fuzzy. I've used White Labs french saison (WLP590), and Belgian Saison 1 (WLP565), the 565 is notorious for stalling and when it does, it won't start again.

Edit...see I caught you pre-edit Fuzzy, it's all good. I haven't used the yeast so maybe my fear of stalling is more related to the 565 experience)

 

[fuzzy2133]

All good, stalling is a valid concern, I may have just been lucky at catching it soon enough to make the necessary action.