Author Topic: Star San suck back  (Read 2406 times)

Offline BiggieBig

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Star San suck back
« on: November 27, 2017, 09:22:44 PM »
Was fermenting an Oyster Stout so the oyster flavor is a very subtle nuance.  I was fermenting in the upper 60's and decided to reduce temps slightly and dropped 5 degrees.  Before I knew what was going on, my BO tube sucked back close to two cups of star san solution into the fermenter.

Granted this is a small amount of diluted star san in a 5.5G batch of beer.  But I "think" I can taste the star san in the beer...of course I am subconsciously try to pick out the star san taste and make a big deal of my screw up.  Since this beer is so subtle, any off flavors can kill it.

BTW, I read somewhere that star san may either float on top or sink to the bottom....anything to this or just idle talk?

Offline denny

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Re: Star San suck back
« Reply #1 on: November 27, 2017, 09:26:16 PM »
I can't imagine why it would either float or sink.
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Offline macbrews

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Re: Star San suck back
« Reply #2 on: November 27, 2017, 09:41:13 PM »
When it happened to me, it formed a distinct clear layer on the top of the beer. Maybe it was supported by whatever remnants of a krausen that was left, but it was clearly demarcated.  I siphoned the underlying beer from the fermenter to a keg and it was fine.  I tried to be as non-turbulent as possible when I did that.

In my case it caused no problems - it even won a medal in competition

Offline BiggieBig

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Re: Star San suck back
« Reply #3 on: November 27, 2017, 09:52:11 PM »
When it happened to me, it formed a distinct clear layer on the top of the beer. Maybe it was supported by whatever remnants of a krausen that was left, but it was clearly demarcated.  I siphoned the underlying beer from the fermenter to a keg and it was fine.  I tried to be as non-turbulent as possible when I did that.

In my case it caused no problems - it even won a medal in competition

Wow, I have hope!  I rack off the bottom with a racking arm so I hope mine floats on the krausen layer too.

Offline Stevie

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Re: Star San suck back
« Reply #4 on: November 27, 2017, 09:54:33 PM »
Maybe the separation depends on where the beer is at in fermentation and with how much force the StarSan is sucked. Look at Black and Tans. They stay separate but the line gets fuzzier and fuzzier as the glass is moved. If fermentation is active, I’m sure it won’t be long before the liquids are just about homogenous.

Offline BrewBama

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Star San suck back
« Reply #5 on: November 27, 2017, 11:27:38 PM »
As a side note I recommend making one of these the eliminate suck back.




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« Last Edit: November 27, 2017, 11:29:25 PM by BrewBama »
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Offline BiggieBig

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Re: Star San suck back
« Reply #6 on: November 28, 2017, 01:02:00 AM »
As a side note I recommend making one of these the eliminate suck back.




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That is awesome!  Did you make that anti suck back device or buy the drilled lids and fittings?
« Last Edit: November 28, 2017, 01:03:52 AM by BiggieBig »

Offline ynotbrusum

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Re: Star San suck back
« Reply #7 on: November 28, 2017, 02:43:48 AM »
That is totally slick - what simple ingenuity!
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Offline brewsumore

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Re: Star San suck back
« Reply #8 on: November 28, 2017, 06:26:37 AM »
I just remove the BO tube and stick in a rubber stopper.  I rack no more than 2 days later, and if I have to get under the lid for any reason - mostly to check gravity, then I'll gas the headspace with C02 after the first 24 hrs cold crashing.

Offline bjanat

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Star San suck back
« Reply #9 on: November 28, 2017, 09:57:48 AM »
Two plastic coke bottles and aquarium tubes, and a 4mm to 7mm connection is cheap.
Use these as caps. They can break, so it’s good to have a few extras.
http://s.aliexpress.com/yUVn2Iny

Offline BrewBama

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Star San suck back
« Reply #10 on: November 29, 2017, 12:34:21 AM »
As a side note I recommend making one of these the eliminate suck back.




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That is awesome!  Did you make that anti suck back device or buy the drilled lids and fittings?

I made mine but the kit is avail online if you choose not to.

Two plastic coke bottles and aquarium tubes, and a 4mm to 7mm connection is cheap.
Use these as caps. They can break, so it’s good to have a few extras.
http://s.aliexpress.com/yUVn2Iny


There ya go.


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Huntsville AL

Offline klickitat jim

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Re: Star San suck back
« Reply #11 on: November 29, 2017, 01:20:53 PM »
I'm curious why one wouldn't just remove the blow off tube from the bucket of starsan before Crashing? If it's still fermenting so active that you need a blow off tube, why are we crashing?

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Offline Hoppy1

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Re: Star San suck back
« Reply #12 on: November 29, 2017, 03:12:21 PM »
Just use cheap vodka in your airlock

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Offline denny

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Re: Star San suck back
« Reply #13 on: November 29, 2017, 03:24:02 PM »
I'm curious why one wouldn't just remove the blow off tube from the bucket of starsan before Crashing? If it's still fermenting so active that you need a blow off tube, why are we crashing?

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Too easy....😉
Life begins at 60.....1.060, that is!

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Offline Stevie

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Re: Star San suck back
« Reply #14 on: November 29, 2017, 04:02:02 PM »
The OP wasn’t crashing. He lowered the temp 5°