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General Category => General Homebrew Discussion => Topic started by: twoguysale on November 21, 2012, 01:57:36 PM

Title: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 21, 2012, 01:57:36 PM
Help,

I have noticed what looks to be mold in the bottom of my 5 gallon jug that I use for an airlock. I was close to dumping this BUT thought I would get an opinion from some more experienced brewers.

I used tap water and oddly enough I don't see anything in the tube....only in the jug? This is an IIPA and unfortunately I have stalled for way too long to make a move and I have had dry hops in this fermenter for at least 5 weeks!!

Any help is appreciated.

Jim
Title: Re: Mold spots in bottom of air lock bottle.
Post by: euge on November 21, 2012, 02:10:37 PM
Help,

I have noticed what looks to be mold in the bottom of my 5 gallon jug that I use for an airlock. I was close to dumping this BUT thought I would get an opinion from some more experienced brewers.

I used tap water and oddly enough I don't see anything in the tube....only in the jug? This is an IIPA and unfortunately I have stalled for way too long to make a move and I have had dry hops in this fermenter for at least 5 weeks!!

Any help is appreciated.

Jim

I'm sorry but this isn't very clear to me regarding your setup. Is the beer in contact with the mold?
Title: Re: Mold spots in bottom of air lock bottle.
Post by: davidgzach on November 21, 2012, 02:28:46 PM
Do you have a blow-off tube in the 5 gallon jug?  That's my guess Euge....

Dave
Title: Re: Mold spots in bottom of air lock bottle.
Post by: bluesman on November 21, 2012, 02:31:38 PM
It would be helpful if you could post a pic. Sounds like you have a blow-off tube in a bucket. I suggest using some starsan solution in the blow-off bucket on the next round.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: theDarkSide on November 21, 2012, 03:24:45 PM
I just had a similar experience.  I had a blow off tube on a pale ale with the tube sitting in a plastic jug with starsan.  Some of the blowoff ended up in the jug and mold formed on the top of the liquid.  No mold was evident in the blowoff tube or the beer when I kegged it last night.

So I'm sure it will be fine.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 21, 2012, 03:29:38 PM
Thanks guys for the quick responses. The beer is not in contact with the mold as I can see it. It just appeared one spot at a time in my clear 5 gallon water jug. I like the idea of sanitizer but since we've never had the problem before I guess we've been very lucky.

The fermenter is a half barrel from Sabco and we have a 1/2" clear line with a small PVC tube that extends to the bottom of this jug with about 3 gallons of tap water in it. The mold? is peppered all around the bottom of the jug.

I have a few pictures but not sure how to post them on this forum.(I hate to sound ignorant and waste your time)

Thanks again

Title: Re: Mold spots in bottom of air lock bottle.
Post by: bluesman on November 21, 2012, 03:37:20 PM
Thanks guys for the quick responses. The beer is not in contact with the mold as I can see it. It just appeared one spot at a time in my clear 5 gallon water jug. I like the idea of sanitizer but since we've never had the problem before I guess we've been very lucky.

The fermenter is a half barrel from Sabco and we have a 1/2" clear line with a small PVC tube that extends to the bottom of this jug with about 3 gallons of tap water in it. The mold? is peppered all around the bottom of the jug.

I have a few pictures but not sure how to post them on this forum.(I hate to sound ignorant and waste your time)

Thanks again

You need a picture hosting site, like photobucket or flickr. Just copy the direct link from the pic on the host site and paste it into the image function above the message box. It's that simple.  :)
Title: Re: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 21, 2012, 04:02:58 PM
Here is what I have

(http://www.flickr.com/photos/90286695@N05/)

I hope these can be viewed.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 21, 2012, 04:08:14 PM
Well the red X doesn't look too good so until I learn a bit more (about brewing and computers) let's try this link

http://www.flickr.com/photos/90286695@N05/
Title: Re: Mold spots in bottom of air lock bottle.
Post by: redbeerman on November 21, 2012, 04:10:09 PM
I would empty it, clean it out and refill with Star-San (tm) solution.  Your beer should be fine.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: dak0415 on November 21, 2012, 04:16:54 PM
I could understand if the mold was floating on the top of the water in the blowoff, but actually growing under water?  Are you sure the mold is not just growing on the OUTSIDE (underside) of the bottle?  Is your tap water from a well or chlorinated?

Dave
Title: Re: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 21, 2012, 05:00:53 PM
I totally agree about it seems strange inside on the bottom but I did check the bottom underside in disbelief and unbelievably it is on the inside surface. I think I better just get this kegged and bottled. Emptying the airlock sounds like a good plan but after over 5 weeks dry hopping with 10 oz. Simcoe and 5 oz. Chinook not sure what the heck it's going to taste or smell like?

I appreciate all the input!

Thanks,
Jim
Title: Re: Mold spots in bottom of air lock bottle.
Post by: euge on November 21, 2012, 05:10:44 PM
I think that is mildew that was extant before you used it this time. You just didn't notice it perhaps. A soak with PBW or lye (sodium hydroxide) ought get rid of it.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: tschmidlin on November 22, 2012, 08:24:52 AM
Taste the beer, it is probably fine.
Title: Re: Mold spots in bottom of air lock bottle.
Post by: Slowbrew on November 22, 2012, 12:04:28 PM
I agree with everyone else that you should be fine.  Your fermenter has a positive preasure compared to the air lock so nothing should be able to travel back up through the tubing.  Package the beer and sanitize the better bottle.  It's all good.

Paul
Title: Re: Mold spots in bottom of air lock bottle.
Post by: davidgzach on November 22, 2012, 01:49:23 PM
Yep, RDWHAHB....
Title: Re: Mold spots in bottom of air lock bottle.
Post by: twoguysale on November 22, 2012, 05:19:29 PM
Thanks again for all the input. I intend to taste today and hopefully bottle this weekend !!

Jim
Title: Re: Mold spots in bottom of air lock bottle.
Post by: ynotbrusum on November 24, 2012, 01:17:59 PM
But don't leave the Better Bottle with PBW in it for 5 Weeks!  It can weaken the plastic according to the manufacturer...

http://www.better-bottle.com/technical.html?=b-b_cleaning_right.html

Title: Re: Mold spots in bottom of air lock bottle.
Post by: euge on November 24, 2012, 04:55:44 PM
But don't leave the Better Bottle with PBW in it for 5 Weeks!  It can weaken the plastic according to the manufacturer...

http://www.better-bottle.com/technical.html?=b-b_cleaning_right.html



Yeah I don't do it longer than 24 hours for hard to remove gunk, stains and smells from my bucket fermenters. Often I'll use bleach for a couple hours and rinse well, but that won't get rid of residue like mildew completely. One needs something that'll physically remove it like an acid-based cleaner or caustic such as lye.