nu2mycology said:

(While they were in the incubator they were in sterlite containers with the lids on)

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Anno said:

>when I checked in on them there was the beginnings of cobweb on a couple other casings.

Are you sure it is cobweb and not mycelium?
Check the contamination faq
http://www.shroomery.org/index/par/23418
for images of cobweb and compare to what you have.

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derx said:

i cant see using alum. foil lid rather than the lid that comes with the sterlite containers inducing any less contams. If both lids were properly whiped down, there shouldn't be a difference. If neither lids were not whiped down, there shouldn't be a difference.

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discman1 said:

An ounce of prevention is worth a pound of shrooms. Or something.

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Now that is a good one!

discman1 said:

I have never run across a rubbermaid/sterlite container that had an air-tight lid. Infact, I would say that tinfoil has the potential to be more air tight than any tub lid.

That isn't his problem. Cobweb mold or any other contam doesen't just spontaneously sprout up. He needs to keep the contamination from reaching his substrate in the first place.

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Citric said:

Dont listen to me then.

When it boils down to it.  You have contams and I dont

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That isn't what we're trying to say.... I wasn't trying to come across like an ass or anything, but it's true. Examine any tub lid.. You will find that most of them are warped and don't even come close to sealing. Many of them have reinforcement bridges that flat-out prevent sealing, because in most cases you want the things you're storing to be able to breathe.

Just apply the same logic that applies to jars. They have very little ventilation, but they definately don't contam just because of that fact.

There is only one explination, that there are cobweb mold spores somewhere in his environment. Some got onto his casing substrate, and germinated. He could leave his casings out in the open with no cover at all, and if there are cobweb spores present, they will land and grow. The bottom line is that he needs to be more sterile in his environment, practices and procedures.

scatmanrav said:

Were talking about Sterilite containers..the small ones used for smaller casings of a quart or so DO seal airtight. I just did go grab one and fill it with water and flipped it. I also did so with glad containers I have, shoebox containers (the plastic ones with snap on lids), and tupperware containers. All of which held upsidedown without leaking.

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Weird, what model number/size are your containers? That is exactly what it is.. in that picture that is.. a small sterilite tub. It wouldn't hold water if it had to(while upside down)! 

I'd be interested in some of the ones that seal better.. I'll have to go looking around.