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Offlinemaverick187
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Reversing Overlay
    #17323041 - 12/02/12 08:17 PM (11 years, 5 months ago)

We know that high CO2 levels, incorrect temps, etc causes overlay. Is there a way to reverse the overlay? It's basically just matted/hardened mycelium. But will not allow water to hydrate the substrate. I don't think just patching would resolve this issue, would it? Any thing else I could think of would just damage the otherwise healthy mycelium...


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"Each day we will spill their blood til it rains down from the skies. Do not kill, do not rape, do not steal, these are principles which every man of every faith can embrace. These are not polite suggestions. These are codes of behavior and those of you that ignore them will pay the dearest cost. There are varying degrees of evil, we urge you lesser forms of filth not to push the bounds and cross over into true corruption, into our domain. But if you do, one day you will look behind you and you will see we three and on that day you will reap it. And we will send you to which ever god you wish." -Boondock Saints

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OfflineGrogan
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Re: Reversing Overlay [Re: maverick187]
    #17324895 - 12/03/12 03:52 AM (11 years, 5 months ago)

Not that I know of..
but you can dunk your subs and allow them to hydrate if thats all the overlay is causing you lack of moisture.

Usually by the time I have overlay its about time to toss that one anyway (for me at least)


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OfflineRogerRabbitM
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Re: Reversing Overlay [Re: maverick187]
    #17325525 - 12/03/12 08:44 AM (11 years, 5 months ago)

Quote:

maverick187 said:
We know that high CO2 levels, incorrect temps, etc causes overlay.




Not hardly.  I've only seen overlay once or twice in 40 years.  If you wish to describe what you're seeing, we can help diagnose it, but I can almost guarantee that you're not seeing overlay.
RR


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Offlinemaverick187
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Re: Reversing Overlay [Re: RogerRabbit]
    #17326647 - 12/03/12 01:08 PM (11 years, 5 months ago)

What happened was a fellow grower had a tray 12"x12"x3" deep of substrate for a cub. grow. They neglected it poorly. No proper humidity, irregular misting, who knows what all exactly. It was mostly sealed up after full colonization. The casing layer was non existent as the mycelium grew up through it and then the entire top layer became a solid mass of rubbery mycelium. You can actually knock on the top of the layer. I've since the "dunked" the entire tray. Some moisture was retained within the substrate. But after 3 1/2 weeks the thing will not pin. I actually cut a cross section out of the tray and dunked and cased that and everything but the original top layer began to fruit. I am somewhat reluctant to remove the entire top layer. I looked into what causes overlay according to RR's notes, because that's what I assumed it was.

RR- your notes are sort of like my bible. And I thought since the tray was sealed, that would explain the high CO2 levels, excessive humidity, incorrect temperatures etc...

Here's a quote from yourself out of your notes:
Overlay is the condition that results when mycelium has been allowed to completely cover the casing surface. It is caused by prolonged vegetative growth temperatures, high CO2 levels, and excessive humidity. If overwatered, the overlay will become matted, or, will form a dense, dead layer of cells on the casing surface. OVERLAY CASING-RR


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"Each day we will spill their blood til it rains down from the skies. Do not kill, do not rape, do not steal, these are principles which every man of every faith can embrace. These are not polite suggestions. These are codes of behavior and those of you that ignore them will pay the dearest cost. There are varying degrees of evil, we urge you lesser forms of filth not to push the bounds and cross over into true corruption, into our domain. But if you do, one day you will look behind you and you will see we three and on that day you will reap it. And we will send you to which ever god you wish." -Boondock Saints

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Offlinegrowmore
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Re: Reversing Overlay [Re: maverick187]
    #17328646 - 12/03/12 07:13 PM (11 years, 5 months ago)

You could try deep scathing it with a fork. I don't I know if this would help you. try doing a search for deep scratching on overlay casings and see what you can come up with maybe it will help or maybe it won't best of luck


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InvisibleViruk
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Re: Reversing Overlay [Re: growmore]
    #17329619 - 12/03/12 09:42 PM (11 years, 5 months ago)

Well I've had my cool mist fail, and it was about 28C at least. The whole top of the coir substrate became slightly dried, and yellow/white, it also didn't pin.

Is that overlay, or is that what people are mistaking for overlay? Just dried out dead, matted mycelium?

I just see RogerRabbit always saying it's incredibly rare, so I'm trying to figure out what it is.

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Offlinemaverick187
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Re: Reversing Overlay [Re: Viruk]
    #17332072 - 12/04/12 11:31 AM (11 years, 5 months ago)

I always assumed that's what overlay was. A dense, compacted layer of mycelium with the exposed layer being primarily dead cells of mycelium. With the end result being an eggshell white colored, leathery layer on the outside. When sprayed with water, water beads up and will not soak in. All my searching indicated the same. Maybe RR can shed some light on this and answer both of our questions.

It wouldn't surprise me he's only seen it a few times since he's like the best grower out there. I wish I had his knowledge for sure :smile:

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OfflineRogerRabbitM
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Re: Reversing Overlay [Re: maverick187]
    #17335837 - 12/04/12 10:43 PM (11 years, 5 months ago)

You've described overlay for perhaps the first time around here. :laugh:

It only happens after severe neglect, which rarely occurs with everyone OCD'ing their grows.

Try dunking it as a block and then cover lightly with verm.  Dunking should soften it up some.
RR


--------------------
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semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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OfflineGrogan
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Re: Reversing Overlay [Re: maverick187]
    #17348372 - 12/07/12 04:49 AM (11 years, 5 months ago)

RR beat me to it I was going to say verm them after my advice of dunking.. I assumed you had cased them :dancingshroom:

Quote:

maverick187 said:
A dense, compacted layer of mycelium with the exposed layer being primarily dead cells of mycelium. With the end result being an eggshell white colored, leathery layer on the outside. When sprayed with water, water beads up and will not soak in. :smile:




This sounds exactly what I  have seen myself and described as overlay.. leathery looking reptile eggshell looking stuff lol..


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"Maybe a cow occasionally ate a shroom, but it certainly wouldn't be such a potent shroom that the cow would be trippin balls. " LOL

Edited by Grogan (12/07/12 04:50 AM)

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