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Tagobolts

Supporting Member
HBT Supporter
Joined
Dec 4, 2018
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Location
Albuquerque
So its starting to get cold. Had my beer fermenting and then was going to cold crash for a few weeks.
So the blow off tube is starting to suck up water. I have a great idea lets take the tube out and let the water drain out a little to bring it down so it can start to get colder.

I assume you know what happened next...

ugh! Anyway, if some star san got in the brew, is it toast? I know its ok at the beggining when you leave the foam in but curious if i just trashed this batch.
 
So its starting to get cold. Had my beer fermenting and then was going to cold crash for a few weeks.
So the blow off tube is starting to suck up water. I have a great idea lets take the tube out and let the water drain out a little to bring it down so it can start to get colder.

I assume you know what happened next...

ugh! Anyway, if some star san got in the brew, is it toast? I know its ok at the beggining when you leave the foam in but curious if i just trashed this batch.

I've had brew suck star san similarly with no ill effects. Your brew will be just fine.
 
Unless you sucked up a lot, more than a quart, I wouldn't worry.

I'll add my usual: DON'T use so much sanitizer. You only need to keep the end of the blow off tube submerged. I use a margarine cup with about 3/4 inch. So only a few ounces. There is not enough volume that it could suck back. It would not get to the top of the tube before letting air in and dropping back out of the tube.
 
OK yeah the more I thought about it the more I realized it should be ok. It was just a little. I will just have to not share this batch :) you guys are awesome!
 
This is why I never cold crash. I've thought about it but never have . Ive had no problem getting beer clear when I want it that way. Some people just put some co2 on it so that doesnt happen. If I were to cold crash that's the way I'd do it.
 
This is why I never cold crash. I've thought about it but never have . Ive had no problem getting beer clear when I want it that way. Some people just put some co2 on it so that doesnt happen. If I were to cold crash that's the way I'd do it.
You will get clear beer cold crashing in the keg until you accidentally bump or move that keg. Cold crashing the fermentor is real easy. Once you try it I doubt you would go back. Cheers
 
You will get clear beer cold crashing in the keg until you accidentally bump or move that keg. Cold crashing the fermentor is real easy. Once you try it I doubt you would go back. Cheers

Maybe that's why I get clear beer . I keg and it doesnt move until I take the empty keg out of my kegerator. If I were to cold crash in the fermenter I would put about 5 psi on it and let it go for a few days?
 
No need for such high pressure (and if you're using a carboy that would be a huge mistake with potentially disastrous results).
All we're trying to do is maintain positive pressure as the headspace pressure drops and the liquid volume contracts (a little bit).
I put 11" WC (~0.4 psi) on my carboys when crashing...

Cheers!
 
Maybe that's why I get clear beer . I keg and it doesnt move until I take the empty keg out of my kegerator. If I were to cold crash in the fermenter I would put about 5 psi on it and let it go for a few days?
Yup 2-3 days at 32f clears up really nice and leaves very minimal amount of sediment in the keg. I guess if you never need to move the keg it's not such a big deal but for myself im always making 2-3 kegs at a time and often there for other people or parties I need the beer ready to go at anytime. Having to wait until it's in the keg for a few days to clear and carbonate is too much hassle for myself. Also why I prefer to carb in the fermentor as that way once i transfer into kegs there completely ready to go. But as all things homebrew different strokes for different folks. Cheers
 
No need for such high pressure (and if you're using a carboy that would be a huge mistake with potentially disastrous results).
All we're trying to do is maintain positive pressure as the headspace pressure drops and the liquid volume contracts (a little bit).
I put 11" WC (~0.4 psi) on my carboys when crashing...

Cheers!
And this when using carboys. Cheers
 
Blazin what psi do you use when cold crashing in your spike?
Usually 13psi. Once I reach 32f I leave it 48 hours then dump until I get clean beer. Then switch the co2 from the prv to the carb stone for another 24 hours then into the kegs. Cheers
 
Usually 13psi. Once I reach 32f I leave it 48 hours then dump until I get clean beer. Then switch the co2 from the prv to the carb stone for another 24 hours then into the kegs. Cheers

+1 to this. As the beer cools, it "sucks" in the co2. (Laymans terms obviously. Science would say better!).
I would prefer to have a little too much co2 vs not enough.
If you are going to hook it up to a carb stone why not start with the pressure where you will set your carb stone too (usually what? 12-14 psi based on beer type?).

Edit:
To the op @Tagobolts - we have ALL done this- the dreaded star san suck-back! I would never puporfusefully drink dilluted star san, but if you use the right ratio you should be fine.
Also, for my blow-off hose, i usually dilute the star san a bit more for this reason. Maybe an extra 50% distilled water to already diluted star san.
 
+1 to this. As the beer cools, it "sucks" in the co2. (Laymans terms obviously. Science would say better!).
I would prefer to have a little too much co2 vs not enough.
If you are going to hook it up to a carb stone why not start with the pressure where you will set your carb stone too (usually what? 12-14 psi based on beer type?).

Edit:
To the op @Tagobolts - we have ALL done this- the dreaded star san suck-back! I would never puporfusefully drink dilluted star san, but if you use the right ratio you should be fine.
Also, for my blow-off hose, i usually dilute the star san a bit more for this reason. Maybe an extra 50% distilled water to already diluted star san.
13 psi/32f is what I typically carbonate at. I just don't use the carb stone until after I dump to avoid kicking up the sediment although it probably doesn't matter. Cheers
 
Edit:
To the op @Tagobolts - we have ALL done this- the dreaded star san suck-back! I would never puporfusefully drink dilluted star san, but if you use the right ratio you should be fine.
Also, for my blow-off hose, i usually dilute the star san a bit more for this reason. Maybe an extra 50% distilled water to already diluted star san.

Don't lump me into this "we have ALL done this" :) I read about suck back very early on and never put my blow off tube in enough Starsan that it COULD be sucked back....

I have been replying to these threads for years questioning why so much Starsan and suggesting only enough to keep the end of the blow off tube submerged. I use a Margarine cup with about 3/4 inch (less than 4 ounces of Starsan) and put that cup in an old pot in case it overflows. No chance of suck back. Now I have to work out a co2 capture rig so that I don't suck in oxygen.
 
Don't lump me into this "we have ALL done this" :) I read about suck back very early on and never put my blow off tube in enough Starsan that it COULD be sucked back....

I have been replying to these threads for years questioning why so much Starsan and suggesting only enough to keep the end of the blow off tube submerged. I use a Margarine cup with about 3/4 inch (less than 4 ounces of Starsan) and put that cup in an old pot in case it overflows. No chance of suck back. Now I have to work out a co2 capture rig so that I don't suck in oxygen.
My apologies... i was trying to help the OP feel better and RDWHAHB type feel.

I think i would still rather have a few ounces of star san (read- basically water) sucked in from a jug vs. a little star san than oxygen as in your set up .
 
My apologies... i was trying to help the OP feel better and RDWHAHB type feel.

I think i would still rather have a few ounces of star san (read- basically water) sucked in from a jug vs. a little star san than oxygen as in your set up .

I'll take the air over the Starsan any day, at least in the quantities that I see people getting from suck back. I was really just commenting on the "ALL". I think a lot of people (maybe even most) read and nip this in the bud before it happens.

But if you are using "ALL" - as we have all made some bonehead move at some point... Then yes!!

Why people think then need the blow off tube to be in a gallon or more of Starsan is beyond me, but it happens quite frequently.
 
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