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Offlineliquidjesus
Stranger
Registered: 08/20/04
Posts: 3
Last seen: 13 years, 5 months
infrared heat emitters
    #3377462 - 11/18/04 03:29 AM (13 years, 6 months ago)

Has anyone tried using infrared heating devices? I attempted to warm some half pint jars with a ceramic, infrared heat emitter typically used to warm reptiles. I was careful to measure the actual temperature of the substrate, which I adjusted to 84 F in a test jar directly above the heater. After leaving the jars set for several weeks, the jars furthest from the heater had significantly more growth than the ones closer to it. I?m reasonably sure that none of the jars were above optimal temperature during this time.
My best guess is that these emitters give off a wavelength that inhibits mycelium growth, (they do not give off any visible light though). I?m thinking of placing something over the emitter to deflect any harmful wavelengths. I know heat pads are suggested on this board, but leaving them on all the time may be a fire hazard. Basically I want a silent, dry source of heat to place under a terrarium, with minimal possibility of igniting anything. I?d like to use the ceramic emitters, but I don?t want to spend any more time experimenting with them unless I can be reasonably sure that modifying them might work.


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Offlinediscman1
journeyman
Registered: 08/24/04
Posts: 962
Last seen: 13 years, 4 months
Re: infrared heat emitters [Re: liquidjesus]
    #3377484 - 11/18/04 03:39 AM (13 years, 6 months ago)

There is no wavelength that inhibits mycelium growth. The jars closest to the heater were too hot.


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Offlineticktock
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Registered: 10/02/04
Posts: 389
Loc: Just ask the rabbit.
Last seen: 8 years, 2 months
Re: infrared heat emitters [Re: discman1]
    #3378866 - 11/18/04 12:12 PM (13 years, 6 months ago)

IR is fine for reptiles, poultry, etc. Those things are mobile, and will move to a distance where they are comfortable.

You can't measure the air temperature to see how warm your jars are. It warms objects, not air. Distance from the source is critical and drops at the square of the distance. If you double the distance, you drop the absorbed energy to 1/4.

IR probably isn't practical in this application. :thumbdown:


--------------------
Don't panic!


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Offlinescatmanrav
Brainy Smurf

Registered: 05/08/04
Posts: 11,483
Loc: Flag
Last seen: 5 years, 4 months
Trusted Cultivator
Re: infrared heat emitters [Re: ticktock]
    #3379057 - 11/18/04 12:56 PM (13 years, 6 months ago)

Like he said ^^


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Offlineliquidjesus
Stranger
Registered: 08/20/04
Posts: 3
Last seen: 13 years, 5 months
Re: infrared heat emitters [Re: discman1]
    #3380327 - 11/18/04 06:00 PM (13 years, 6 months ago)

Thanks for the info. I did measure the actual substrate temperature with a meat thermometer placed into a test jar. Would a heavy metal plate or something directly above the emitter be able to absorb the ir and dissapate it through the air?


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Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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