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A genial nod



Registered: 10/19/08
Posts: 67
Loc: Outer Shpongolia
Last seen: 8 years, 1 month
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Questions about FC temp, digital hygrometers and humidity
#10602428 - 07/01/09 09:12 AM (15 years, 6 months ago) |
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I've got some cakes sitting in a shotgun FC right now, and I have a question regarding optimum pinning/fruiting temperatures.
I've read that the optimum temperature is between 70°-75°F for pinning. My FC seems to hang mostly between 77°-80°F. How big a deal is this? Is it going to make a noticeable difference?
Also, questions about humidity: I've got a digital hygrometer that likes to tell me the RH in the FC is at 60-70%. I know the digitals aren't accurate at 90% RH and above, but does the level of their inaccuracy extend to repoting an RH as 20-30% lower than it actually is? Something is telling me the humdity really is dropping in my FC but I won't know until I get an analog hygrometer (which I'm working on).
The humidity issue, if real, may not be such a bad thing if the forum searches I've done are any indication. I've read several posts by RR indicating that, as far as pinning is concerned, it is far better for the cakes to dry out between mistings, so long as they're getting plenty of air--that the fluctuation in humidity is a major pinning trigger. But what about fruiting? Once I start getting mushrooms, will I want to keep the humidity up if possible?
So to recap, I have three basic questions:
1. Is an 80°F temp in the FC going to hurt anything?
2. Are digital hygrometers so crappy that they'll report a 70% RH when the true RH is in the 90% range? (The one I bought seems pretty cheap, by the way).
3. While fluctuating humidity is a good pinning trigger, how does it affect fruiting?
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 10 months
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Re: Questions about FC temp, digital hygrometers and humidity [Re: A genial nod]
#10602442 - 07/01/09 09:16 AM (15 years, 6 months ago) |
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75F to 80F is fine for fruiting. I've seen excellent flushes right up into the 90's, which would nuke colonizing jars, but in the fruiting stage they can tolerate it fine. 72F to 75F might be better, but up to 80F is OK.
Digital hygrometers are total crap. Put it behind the wheel of your car next time you back out of the driveway. That should calibrate it properly.
If you built your shotgun terrarium per the tek and mist a few times daily, your humidity is fine. RR
-------------------- Download Let's Grow Mushrooms
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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veda_sticks
Cultivator




Registered: 07/29/07
Posts: 14,191
Loc: UK
Last seen: 5 years, 13 days
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Re: Questions about FC temp, digital hygrometers and humidity [Re: A genial nod]
#10602445 - 07/01/09 09:17 AM (15 years, 6 months ago) |
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80F is fine, they are tropical and i have heard of them fruiting at higher temps. anywhere between 70-80f is fine. ive had cakes fruit at 65f-70F before and they still fruited fairly fast.
Digitals are inacurat,e but i suspect that its reading the outside RH if its 1 that has an external sensor. Some of those digitals that have external sensors only do temp and the rh sensor is on the unit itself either that or its just a really bad meter. I had a digital guage that had an external sensor but it did have the rh sensor on the external 1, maybe theres a setting to change between internal and external?
A shotgun will easily maintian high humidity if built as per the tek.
Evaporation of moisture is a pinning trigger and thats what FAE does. exchanging the air will cause evaporation to happen.
Just continue doing what you do with a shotgun and it will work, mist then fan.
Look at this thread :-)
http://www.shroomery.org/forums/showflat.php/Number/9182881#9182881
--------------------
PF TEK - writeup by EvilMushroom666
Lets Grow Mushrooms - RogerRabbit & RoadKills website with sample videos plus the full PF TEK video series. Alot of great information - BUY THE DVD
Cakes can and will pin! - So you think cakes suck for pins. Your wrong
Franks Simple Coir/Verm Tek
Franks Proper Pasturisation Tek
Franks Spawning To Bulk - Monotub
Professor Pinheads RTV Injection Port Tek
Foo Mans No Soak WBS Prep Tek
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A genial nod



Registered: 10/19/08
Posts: 67
Loc: Outer Shpongolia
Last seen: 8 years, 1 month
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Re: Questions about FC temp, digital hygrometers and humidity [Re: veda_sticks]
#10602468 - 07/01/09 09:25 AM (15 years, 6 months ago) |
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Thanks you two--what you two told me is what my gut was telling me, too but when I've got the number 70% flashing in my face I tend to wonder.
I followed the Tek for the FC, with the exception that I think I may have drilled too many holes. I've already taped a few up, though.
Thanks again, we'll see how things go.
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Doc_T
Random Dude




Registered: 03/06/09
Posts: 42,395
Loc: Colorado
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Re: Questions about FC temp, digital hygrometers and humidity [Re: A genial nod]
#10602542 - 07/01/09 09:44 AM (15 years, 6 months ago) |
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My experience with digital hygrometers is that they are better than the analog one I bought- while they last. Try not to leave any hygrometer in your FC for more than a few days to a week, to prolong the life.
-------------------- You make it all possible. Doesn't it feel good?
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AlexP



Registered: 06/04/09
Posts: 2,270
Loc: Europe
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Re: Questions about FC temp, digital hygrometers and humidity [Re: A genial nod]
#10602545 - 07/01/09 09:45 AM (15 years, 6 months ago) |
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Quote:
Digital hygrometers are total crap. Put it behind the wheel of your car next time you back out of the driveway. That should calibrate it properly.
Quote:
I followed the Tek for the FC, with the exception that I think I may have drilled too many holes. I've already taped a few up, though.
Don't tape the holes. Just put more perlite inside the terrarium.
-------------------- "To feel today what one felt yesterday isn't to feel - it's to remember today what was felt yesterday, to be today's living corpse of what yesterday was lived and lost." Fernando Pessoa
"When one creates phantoms for oneself, one puts vampires into the world, and one must nourish these children of a voluntary nightmare with one's blood, one's life, one's intelligence, and one's reason, without ever satisfying them." Eliphas Levi
"The joy of life consists in the exercise of one's energies, continual growth, constant change, the enjoyment of every new experience. To stop means simply to die. The eternal mistake of mankind is to set up an attainable ideal." Aleister Crowley
"The Universe is an artistic catharsis." Artifex Infinitum
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