Blow off tube techniques

Discussion in 'Homebrewing' started by Timmush, Jul 27, 2013.

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  1. Timmush

    Timmush Pundit (931) Jan 5, 2008 New Jersey

    I usually slip a hose over the end of a 3 piece airlock with only the 1 piece there. However, it gets full of crud and I wind up throwing the hose out after fermentation. Is there something else I could use to save some $ as a blow off? I usually use a bucket. If I use a carboy, that orange cap with the hose works too, but I still wind up with cruddy hoses.
    Thanks!
     
  2. pointyskull

    pointyskull Zealot (675) Mar 17, 2010 Illinois
    Trader

    I drilled an additional hole in my fermenting bucket lid to accommodate a secondary blowoff tube. I added a grommet so the fit is airtight.

    I still use the airlock, but any excessive blowoff is redirected through the secondary tube instead. Cleanup is easier that way, imo...
     
  3. ipas-for-life

    ipas-for-life Savant (1,041) Feb 28, 2012 Virginia

    I use a 6.5 gallon bucket for 5 gallon batches. I use pure oxygen to aerate and ferment in the mid 60's. I use 5 drops of fermcap in the boil. I use the same blow off set up that you do and rarely get anything in the blow off tube so I just keep it attached to the airlock and clean and sanitize it well and use it again. I wonder if I even need the blow off but use it just to be safe for a week and then switch it out for an airlock. I think the fermcap in the boil and a lower fermentation temp is the key.
     
  4. Timmush

    Timmush Pundit (931) Jan 5, 2008 New Jersey

    Fermcap in the boil affects krausen? I didn't know that. and I currently have a saison using wl565 so lower temp isn't ideal
     
  5. ipas-for-life

    ipas-for-life Savant (1,041) Feb 28, 2012 Virginia

    From what I have read and experienced I think it does. I have read that some people add it to the fermentation vessel also. But I have only added it at the beginning of the boil. My last batch the inside of the lid of my bucket was completely clean when I opened it and got down to 1.010 in a week. 24 batches in and I am still using the original vial I bought. So it isn't much of an expense.
     
  6. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Fermcap in the fermenter has been working great for me. I found that it helps to use about ~50% more than the directions state. My last beer was an American Wheat with Chico yeast (typically a ripe combination for a massive krausen). With the Fermcap, the krausen was only about a cm high.
     
  7. Hands22

    Hands22 Initiate (0) Oct 14, 2011 Florida

    I do it the same way you do, but after a couple days of fermentation I take off the tube and let it soak overnight in a bucket with oxiclean (or PBW). The next day it rinses out fine with hot water.
     
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  8. WickedSluggy

    WickedSluggy Savant (1,129) Nov 21, 2008 Texas

    You might want to explain this. It is not instantly apparent how one would redirect excessive blowoff. I assume you put a stopper (no holes) in your airlock hole. But then I'd wonder why you wouldn't just make a single larger hole and use a carboy sized stopper for your airlock and use the same hole for a blowoff tube when required.
     
  9. Scope4Beer

    Scope4Beer Zealot (677) Sep 28, 2009 Pennsylvania
    Trader

    Just soak it in hot PBW for 30-60 minutes and it comes right off. I use the same blowoff setup as you and it works like a charm.
     
  10. pointyskull

    pointyskull Zealot (675) Mar 17, 2010 Illinois
    Trader

    The redirect was my own harebrained theory. All I know is I don't get clogged airlocks..
     
  11. koopa

    koopa Initiate (0) Apr 20, 2008 New Jersey

    I just stick a blow off hose with an external diameter that is the size of the internal diameter of my carboy opening straight into my carboy opening. Then I place the other end in a bucket with some sanitizer in it. After the first 3-7 days I switch over to a standard airlock and remove the hose / bucket.
     
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