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OfflineKnobleJunga
journeyman
Registered: 02/01/04
Posts: 70
Last seen: 12 years, 6 months
PMP lighting question
    #2308875 - 02/06/04 04:06 PM (12 years, 9 months ago)

Hello everyone, one of the Blue Meanies ( :eek:)is thinking of building a PMP ( Magash style ) and he has a few questions (He's looked through that long thread and couldn't find specific answers to what he's looking for).

First,  :eek: wants to make it in an 18 gallon Rubbermaid Rouchneck (or something similar, possibly not quite as tall).

His real question regards getting light to the cakes. He's read tons of threads and there doesn't seem to be a definitive answer. Basically, he'd like to use a non-transparent lid on the setup, and count on them getting enough light from the room if he open the lid for a few minutes a day. This would allow him to avoid cutting a hole in the top of the lid and installing plexi-glass or plastic wrap (BTW, does plastic wrap hold up well?). His idea that this is okay comes from the posts saying that cakes need very little light (some say just a fraction of a second; others say a few minutes a day) in order to induce pinning.

Do you think this would be okay? Or is he better off sucking it up and putting in a plexiglass window? One potential upside of this is that there would be less opening of the lid (the PMP seems rather automatic), and, therefore, less risk for contams, but he's read that fully colonized cakes can fight off contams...

What do you all think? Oh yes, one final question, if he submerges an aquarium heater under the geolite, is it necessary to put it in a cage, or can it be placed directly in contact with geolite, assuming of course, that the water level is at least an inch above the heater?

The main question here is: will they get enough light from just opening the top for a few minutes a day, or must a window be put in?

Sorry for the long post, just wanted to be precise. Thanks in advance.


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OfflineCooltuba
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Registered: 09/26/03
Posts: 104
Loc: Home
Last seen: 3 years, 2 months
Re: PMP lighting question [Re: KnobleJunga]
    #2309053 - 02/06/04 05:00 PM (12 years, 9 months ago)

I've actually had an idea about pmp lighting for a while. My idea is to mount a low-wattage grow bulb to the top of the rubbermaid container. I have to experiment with a "dry run" first to make sure it doesn't generate too much heat, but as soon as my PMP is empty, I'll give it a shot and post the results.

--cooltuba


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Above musings are entirely fictional.  I do not grow mushrooms nor do I associate with anyone who does.

DRUGS ARE BAD!  MMMMKAY?


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InvisibleMagashM
Da Bud Guru
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Registered: 07/25/02
Posts: 5,875
Loc: Near Hilo
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Re: PMP lighting question [Re: KnobleJunga]
    #2309256 - 02/06/04 06:03 PM (12 years, 9 months ago)

Putting the plexi in would be better but your way will work.



Yes to the heater idea also but make sure you have at least a inch of water over it, and you?ll have to add water a little more often.


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All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?


:growingweed: Join us at the Growery! :growingweed:


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Offlinevermonster
Lost Sailor

Registered: 10/17/03
Posts: 207
Loc: Shangri La
Last seen: 3 years, 1 month
Re: PMP lighting question [Re: Magash]
    #2309413 - 02/06/04 07:09 PM (12 years, 9 months ago)

Magash,
Afoaf has built a small pmp that is about 10"H x15"W x 10"D.
There is a 50W sub heater in there as well. The conditions
have been 73 degrees and rH is 99%. The cover is translucent
with 3/8" holes in each corner. Will there be a problem
with too much humidity? What are the symptoms?
So far (7 days) all cakes have cottony white mycelium and
one pin.


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InvisibleMagashM
Da Bud Guru
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Registered: 07/25/02
Posts: 5,875
Loc: Near Hilo
Trusted Cultivator
Re: PMP lighting question [Re: vermonster]
    #2310081 - 02/06/04 10:44 PM (12 years, 9 months ago)

I keep my humidity high for both my cakes and casings and it seems to be working.



--------------------
All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?


:growingweed: Join us at the Growery! :growingweed:


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