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tetradot
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Registered: 01/15/10
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Last seen: 14 years, 10 days
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heating jars with black shirt/lamp?
#11834117 - 01/15/10 10:02 AM (14 years, 3 months ago) |
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Hi Guys -
I'm doing the PF Tek method with brf/verm, 1/2 pint jars with 4 holes and micropore tape.
My room is relatively cold (~65 deg), and after 4 days I hadn't seen any growth... so to increase temps I threw a black t-shirt over my jars and shined a 70watt light onto it (from about a foot away). This makes the t-shirt warm which in turn heats the jars, and now on day 6 I'm seeing growth in most jars, and minor perspiration in all jars (like the substrate is sweating or something).
Is this a good way to heat the jars? I've been leaving the light on during daylight hours only but was thinking about leaving it on 24 hours since light doesn't permeate the black t-shirt... would this be safe?
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oh_you_know
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Registered: 02/08/09
Posts: 2,282
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Re: heating jars with black shirt/lamp? [Re: tetradot]
#11834146 - 01/15/10 10:09 AM (14 years, 3 months ago) |
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pretty sure you dont want perspiration. im thinking the water on the side of the jar is from ur cake, so really ur cake is drying out. i may be wrong. never experienced this
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tetradot
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Re: heating jars with black shirt/lamp? [Re: oh_you_know]
#11834203 - 01/15/10 10:20 AM (14 years, 3 months ago) |
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Quote:
oh_you_know said: pretty sure you dont want perspiration. im thinking the water on the side of the jar is from ur cake, so really ur cake is drying out. i may be wrong. never experienced this
The perspiration is showing up only around growth sites (or where i inoculated), and it started as soon as i heated up the cakes through this method... even when i turn the light off at night and the jars cool down this perspiration remains.. it's seems really slight compared to the amount of water the recipie called for but idk...
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oh_you_know
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Re: heating jars with black shirt/lamp? [Re: tetradot]
#11834218 - 01/15/10 10:24 AM (14 years, 3 months ago) |
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well yeah its not sucking up all the water. im just saying it might be drying out your cakes. the shirt might also be covering the holes and wont allow for gas exchange and will stall your jars
-------------------- My Journal
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tetradot
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Re: heating jars with black shirt/lamp? [Re: oh_you_know]
#11834234 - 01/15/10 10:28 AM (14 years, 3 months ago) |
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Quote:
oh_you_know said: well yeah its not sucking up all the water. im just saying it might be drying out your cakes. the shirt might also be covering the holes and wont allow for gas exchange and will stall your jars
yea i'm paranoid about that - i kinda pulled the shirt up in some places so its poofy and not tight over the tops of the jars... but the air can get pretty stale under a t-shirt when it gets hot out..
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blood4blood
Calmer Than You Are
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Re: heating jars with black shirt/lamp? [Re: tetradot]
#11834244 - 01/15/10 10:31 AM (14 years, 3 months ago) |
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ya don't cover them up with anything. 65 degrees is fine for colonizing cakes. it can take a little while for growth to start just be patient.
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oh_you_know
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Re: heating jars with black shirt/lamp? [Re: blood4blood]
#11834248 - 01/15/10 10:32 AM (14 years, 3 months ago) |
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its about 65 where i colonize and fruit mine, they are slower but i believe they are more potent
-------------------- My Journal
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nexus1946
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Re: heating jars with black shirt/lamp? [Re: tetradot]
#11834256 - 01/15/10 10:34 AM (14 years, 3 months ago) |
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The condensation you're seeing is a result of temperature difference between the inside and outside of the jars.
Although 65F is a bit cold , this method of warming the jars probably isn't the best way.
However, if you're going to use this method you'll want to leave the light on around the clock and have a thermometer with them so you don't cook the jars.
Do a search for incubators to get some ideas that you may be able to work with.
-------------------- Gypsum/Drywall Tek The Story Of Russell The Texas (Cube) Bear The human race's prospects of survival were considerably better when we were defenceless against tigers than they are today when we have become defenceless against ourselves. -Arnold J. Toynbee
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Kysmoker
Shroomer In Training
Registered: 01/05/10
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Re: heating jars with black shirt/lamp? [Re: nexus1946]
#11834286 - 01/15/10 10:39 AM (14 years, 3 months ago) |
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You really dont need anything over 70 degrees. Im keeping mine at 76 because I think it colonizes a wee bit faster, but you should know that many contams thrive in higher temperature environments.
Oh, and my super hi tech way of maintaining 76 degrees is so crazy YOULL NEVER BELIEVE IT!!!
I keep a lamp on near my jars.... lol. It raises the temp by about 6 degrees. Make sure you use the old bulbs, you know, the round ones that make mother nature cry and all that jazz
-------------------- Your class, your caste, your country, sect, your name or your tribe There's people always dying trying to keep them alive There are bodies decomposing in containers tonight In an abandoned building where A squatter's made a mural of a Mexican girl With fifteen cans of spray paint in a chemical swirl She's standing in the ashes at the end of the world Four winds blowing through her hair -Four Winds by Bright Eyes
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Sillicybin
Registered: 02/14/05
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Re: heating jars with black shirt/lamp? [Re: oh_you_know]
#11834362 - 01/15/10 10:58 AM (14 years, 3 months ago) |
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You usually only see condensation when the jars are being heated unevenly. Hot spots and cold spots cause convection of the small amount of air inside the jars, which causes "weather" on a very tiny scale. This can cause a lot of the water inside the substrate to end up on the edges of the glass and on your filter or verm layer, which you really don't want.
The best way to heat jars is to heat the air around the jars. This helps to heat them evenly to prevent the above. You really do not need to incubate jars, but I do because I have experienced faster growth when I bump the temp up to 76-77 compared to 65. I use a heat-bomb inside a cooler. The jars don't touch it, it just heats the air around them.
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nexus1946
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Re: heating jars with black shirt/lamp? [Re: Kysmoker]
#11834382 - 01/15/10 11:01 AM (14 years, 3 months ago) |
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Normal room temperature is good for colonizing providing your room 20/69F. If not, you're stuck with other means.
I keep mine at 25C/77F with no problems.
-------------------- Gypsum/Drywall Tek The Story Of Russell The Texas (Cube) Bear The human race's prospects of survival were considerably better when we were defenceless against tigers than they are today when we have become defenceless against ourselves. -Arnold J. Toynbee
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Sillicybin
Registered: 02/14/05
Posts: 2,134
Loc:
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Re: heating jars with black shirt/lamp? [Re: nexus1946]
#11834391 - 01/15/10 11:04 AM (14 years, 3 months ago) |
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Quote:
nexus1946 said:
Is that an upside-down halfpint agar jar I see?
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oh_you_know
lsd <3
Registered: 02/08/09
Posts: 2,282
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Re: heating jars with black shirt/lamp? [Re: Sillicybin]
#11834396 - 01/15/10 11:05 AM (14 years, 3 months ago) |
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are you experimenting with upside down agar? care to explain more?
-------------------- My Journal
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VictoriaPandora
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Re: heating jars with black shirt/lamp? [Re: Kysmoker]
#11834402 - 01/15/10 11:06 AM (14 years, 3 months ago) |
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Are you able to put the jars out in the kitchen on top of the fridge? Or in a cabinet above the fridge? This seems to be a common practise to get that little bit of extra warmth in winter. You jars will colonise fine if you just leave them and it's true the fruits are known to be of higher quality when fruited at cooler temps, I don't know about the colonising part though.
I think the fact that your temps are going up and down will slow your jars down more than just leaving them at a steady temp, even if it's a little on the cool side.
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nexus1946
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Quote:
Sillicybin said:
Is that an upside-down halfpint agar jar I see?
Yeah, when I was experamenting with agar in jars vs plates. Plates won.
Quote:
oh_you_know said: are you experimenting with upside down agar? care to explain more?
Moisture built up in the one jar so I flipped it.
Quote:
VictoriaPandora said: it's true the fruits are known to be of higher quality when fruited at cooler temps, I don't know about the colonising part though.
You want the jars to colonize fast. You want the mycelium to beat out any possible contamination. Slow jars = eventual contamination.
Quote:
VictoriaPandora said: I think the fact that your temps are going up and down will slow your jars down more than just leaving them at a steady temp,
Yes. And the temperature differences will cause condensation inside the jars.
-------------------- Gypsum/Drywall Tek The Story Of Russell The Texas (Cube) Bear The human race's prospects of survival were considerably better when we were defenceless against tigers than they are today when we have become defenceless against ourselves. -Arnold J. Toynbee
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Kysmoker
Shroomer In Training
Registered: 01/05/10
Posts: 804
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Re: heating jars with black shirt/lamp? [Re: Sillicybin]
#11834505 - 01/15/10 11:28 AM (14 years, 3 months ago) |
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Quote:
Sillicybin said: You usually only see condensation when the jars are being heated unevenly. Hot spots and cold spots cause convection of the small amount of air inside the jars, which causes "weather" on a very tiny scale. This can cause a lot of the water inside the substrate to end up on the edges of the glass and on your filter or verm layer, which you really don't want.
The best way to heat jars is to heat the air around the jars. This helps to heat them evenly to prevent the above. You really do not need to incubate jars, but I do because I have experienced faster growth when I bump the temp up to 76-77 compared to 65. I use a heat-bomb inside a cooler. The jars don't touch it, it just heats the air around them.
Yea, thats how I use my lamp, its just on near my jars, its not touch them (or even really that close to them). But condensation inside jars is completely normal, as mycelium grows it produces heat, and this will make the temp inside your jar different from the outside, causing condensation. Really not alot you can do about it.
-------------------- Your class, your caste, your country, sect, your name or your tribe There's people always dying trying to keep them alive There are bodies decomposing in containers tonight In an abandoned building where A squatter's made a mural of a Mexican girl With fifteen cans of spray paint in a chemical swirl She's standing in the ashes at the end of the world Four winds blowing through her hair -Four Winds by Bright Eyes
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