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Registered: 10/20/03
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Big black spot on jar glass at first, now gone...what??
    #2024108 - 10/20/03 12:45 AM (14 years, 6 months ago)

My dentist's roommate's cousin's friend is working on some cultivation...in one jar, a day or two after innoculation, there was a black spot (about 1/4 to 1/2 inch in size, irregularly shaped....i.e. not circular), seemingly right where the mycelium was starting (I think there was another smaller spot as well, on the other side of the jar). Now it has disappeared, and the jar is probably %90 colonized, with no sign of it. Any ideas? Couldn't find anything in the faqs/search.

thanks very much...

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Re: Big black spot on jar glass at first, now gone...what?? [Re: professorlar]
    #2024201 - 10/20/03 01:27 AM (14 years, 6 months ago)

I've had this happen before, I too was worried that it was a contam but all went well. Now these were small black dots, especially in the bottom of Karo Jars. I beleive it may be the spore stuck on the glass, gradually growing into mycelia. Now I'm in no way certain this is so but from my experience these tiny spots were not contams. It seems more obvious with certain strains I've worked with. If the spots are large it sounds like a contam to me. Maybe someone will know a definite answer to this one.

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Re: Big black spot on jar glass at first, now gone...what?? [Re: EnCHaNTeDHoBBiT]
    #2024607 - 10/20/03 05:22 AM (14 years, 6 months ago)

Don't play with black molds. You should inspect the inside of the cake by crumbling it.
Anyway, be careful, many black molds can make you very sick or even kill you.


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Use, do not abuse; neither abstinence nor excess ever renders man happy.

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Amazon Shop: ½ Pint Jars

Mushrooms, Mycology and Psychedelics >> Contamination Forum

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