White Stuff Floating On Top Of Cab In Carboy
Posted 12 March 2011 - 01:19 PM
Posted 12 March 2011 - 02:12 PM
i all, I have some 2010 cab brewing in carboy's., I am about to rack. One of the carboys has some white crap at the bottom of the mouth and floating on the top. i did a taste test and smelled it. it tastes okay and smells like the others. Should I be concerned? I am going to keep it separate from the rest of the carboy's just in case. Thanks for all the advice Steve A
sounds like mycoderma , flowers of wine , a spoilage organism surface yeast , very common problem , caused by too much headspace combined with too little so2 .
if you can filter the wine do that and add 1/2 tsp of kmeta to the carboy of filtered wine.
if you can't filter just rack the wine leaving the scum behind and the add the metabisulfite to the racked and topped up wine.
probably a good idea to add 1/2 tsp kmeta to all the other carboys after you rack them and ensure they are all topped up, minimising headspace.
Posted 12 March 2011 - 03:00 PM
Posted 13 March 2011 - 01:22 AM
Posted 14 March 2011 - 10:44 AM
Thanks for all your help Steve
Posted 14 March 2011 - 11:22 AM
Posted 14 March 2011 - 01:47 PM
Posted 19 April 2011 - 06:17 PM
Posted 19 April 2011 - 09:58 PM
Your not alone that was my big learning experience last year. I trashed some of my Petite Sirah in my carboy last year, same problem.
I followed Zacs advice this year keeping the head space to non existent and and the So2 up, that was the key.
15 gallons Petite Sirah
30 gallons Petite Verdot
Posted 20 April 2011 - 06:11 AM
Well seems like i didn't catch it in time and I am really bummed.... I guess no wine for 2010. I did use my pump and know that it too should be contaminated. I bought some b-brite to clean the carboys.From what i have read it should do the trick.. I'm not sure how to go about making sure that that stuff is out of my pump. Will running it through a few times with b-brite get rid of anything inside? Should I toss the pump and buy new one? Thanks Steve
just rune the b brite or a strong sulfite solution through it , its not hard to kill.
did the film grow on the wine again? rack it gently and give it a big bump of so2 before tossing it out.
what does the wine taste like?
Posted 20 April 2011 - 12:08 PM
Yes, it did form on the top again. I guess I dont have anything to lose at this point with trying to save it again provided it tastes okay. I will take off the stuff on the top of them and taste it. It took about 6 weeks for it to come back and Not sure it is any good tho. I almost would rather toss it and not contaminate my barrel. Being a rather new home wine maker, I did see the stuff forming on one of the carboys during malo, thought it might of been just due to the second fermentation. It has been a learning experience. I do have my 2009 Cab still in the barrel and seems like it is doing fine...
On another note. It hasnt reached that finish that I would like and really dont know how to improve that..are there additives to help with such an thing?
Thanks for everyone's imput. It is much appreciated.
Posted 25 April 2011 - 09:04 PM
What micron size would you recommend for filtering?
Werner von Braun
Posted 27 April 2011 - 11:09 AM
as for filtering , 1 micron or smaller .45 is better . main thing is to keep headspace low and so2 up.
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