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OfflineGuess
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2 Substrate jars smell of Sulfur
    #24011752 - 01/15/17 10:13 AM (7 years, 15 days ago)

Hey all, I had recently pasteurized some jars of coir, verm, gypsum, coffee, and some diatomaceous earth all hydrated to field capacity.

Anyway 2 of the 24 jars reeked of sulfur when I opened them. I was on my last tub so I have already used all the other jars from the same batch. None smelled bad expect these two.

As far as I'm aware I pasteurized correctly, I've done it so many times. Why would only 2 smell of sulfur? And can anyone tell me what caused it? It made the entire room reek when they were opened.

Has anyone else experienced this?


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InvisibleMad Season
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Re: 2 Substrate jars smell of Sulfur [Re: Guess]
    #24011847 - 01/15/17 10:47 AM (7 years, 15 days ago)

Coffee has lots of sulfites, perhaps there was a concentrated amount of coffee in those ones? Also lots of thermophilic bacteria that thrive at the temps of a cooling pasteurization cycle love sulfites too, and will release sulfide gas when reacting with a sulfite. So those jars could also have sulfur bacteria in there as well.


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OfflineGuess
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Re: 2 Substrate jars smell of Sulfur [Re: Mad Season]
    #24012075 - 01/15/17 12:13 PM (7 years, 15 days ago)

I saw one of your posts about sulfur bacteria with a link actually, that's really interesting the extra coffee may have caused it. I'm surprised I haven't encountered this before. I always try to spread everything out evenly in my sub (break coir apart, cover in verm, spread coffee, then gypsum, then DE, then pour water, break up and mix thoroughly)

I use this mix for my mushrooms and reptiles so I've used it quite a bit. Other than this encounter with sulfur I have only smelled it one other time, when someone overwatered the plants in my vivarium. I always pasteurize too.

I'm going to keep those jars around in the garage and see if any green bacteria or anything pops up, I'd like to learn more about this.


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Edited by Guess (01/15/17 12:17 PM)


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OfflinePsilocybimater
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Re: 2 Substrate jars smell of Sulfur [Re: Guess]
    #24013879 - 01/16/17 07:11 AM (7 years, 14 days ago)

Gypsum is calcium sulfate, but i have never noticed a sulfur smell from it some brands do have additives that have a sour smell, probably a sulfate reducing bacteria. Salmonella or e. coli


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OfflineGuess
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Re: 2 Substrate jars smell of Sulfur [Re: Psilocybimater]
    #24014170 - 01/16/17 09:45 AM (7 years, 14 days ago)

I have read that about gypsum as well, but I believe those two jars got hotter than the rest of the batch some how and that caused a bacteria outbreak. They had normal lids while the others had foil lids
These things smelled awful, the smell dominated the room when I opened the jar. I don't think gypsum or coffee on its own would cause the smell, it has to be bacteria. I will keep an eye on the jars (they are isolated) and see what pops up.


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