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mushroomhunter
Stranger
Registered: 03/29/09
Posts: 51
Last seen: 14 years, 8 months
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ultra sonic fae
#10155109 - 04/12/09 10:49 PM (14 years, 10 months ago) |
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i have another question i forgot to post. its about fae. for fae on my first two grows ive just been fanning every few hours except at night when im sleepy time. if i drill oh say ten to fifteen small wholes in each side of the tub and keep my ultrasonic on a 15 minute on 15 minute off cycle will that be enough fae? the entry hole for the hose isnt the most snug fitting so the hose points up at the lid this shouldnt matter as humidity falls correct?
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pyroppuppy420
#cultivation Whore
Registered: 11/11/08
Posts: 31
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first post on these boards i am glad it is something i can shed a little light on. i have an ultrasonic mister in my 10 gallon fish tank growing shiitake on sawdust. With a 30 min on 30 min off i am able to keep 75-80% humidity at the opposite side. So with a good amount of humidity loss from the holes i think you may want to go with 30 on 15 off. Depends on how good the mister is. Hope this helps
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Duggstar



Registered: 01/20/09
Posts: 6,273
Loc: Ireland
Last seen: 1 year, 2 months
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Quote:
this shouldnt matter as humidity falls correct?
No, humidity rises.
Edited by Duggstar (04/12/09 11:29 PM)
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mushroomhunter
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Registered: 03/29/09
Posts: 51
Last seen: 14 years, 8 months
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ok so the hose intake is at the top of the tub would i do good to seal it off and move it down to just above substrate level
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Shroominit
Part Time Mycologist


Registered: 11/29/08
Posts: 4,662
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Humidity does not rise or fall. It moves in the direction of air exchange.
Ultrasonics do not provide any type of FAE normally, unless it has some sort of fan in it, even then I would fan it at least a few times a day.
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Duggstar



Registered: 01/20/09
Posts: 6,273
Loc: Ireland
Last seen: 1 year, 2 months
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Quote:
Shroominit said: Humidity does not rise or fall. It moves in the direction of air exchange.
Ultrasonics do not provide any type of FAE normally, unless it has some sort of fan in it, even then I would fan it at least a few times a day.
No humidity does rise, water vapor is lighter than air:
Quote:
Water vapor is a lighter gas than air at the same temperature, so humid air will tend to rise by natural convection. http://en.wikipedia.org/wiki/Relative_humidity
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Shroominit
Part Time Mycologist


Registered: 11/29/08
Posts: 4,662
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Re: ultra sonic fae [Re: Duggstar]
#10156221 - 04/13/09 03:48 AM (14 years, 10 months ago) |
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True, and it really doesn't really matter in this situation since air currents are flowing (FAE) in the tub anyway. It's not the same as something like helium in air where it will float regardless of air current. Humid air is quite susceptible to currents and will not 'float up' out of them.
The 'natural convection' they speak of has deals with heating of said molecules which makes them much more buoyant and causes them to rise. Convection always deals with heat in my experience, if this is not true, please enlighten me.
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Duggstar



Registered: 01/20/09
Posts: 6,273
Loc: Ireland
Last seen: 1 year, 2 months
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Quote:
Shroominit said: True, and it really doesn't really matter in this situation since air currents are flowing (FAE) in the tub anyway. It's not the same as something like helium in air where it will float regardless of air current. Humid air is quite susceptible to currents and will not 'float up' out of them.
The 'natural convection' they speak of has deals with heating of said molecules which makes them much more buoyant and causes them to rise. Convection always deals with heat in my experience, if this is not true, please enlighten me.
No, 'natural convection' is distinct from 'heat convection'. Sometimes people use the word convection to mean 'heat convection' but this is incorrect. Water vapor is always lighter than air at the same temperature, so it is exactly like helium.
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RogerRabbit said:
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Boris said: note that humidity falls down through the air. You wanna introduce the humidity from the top, and let it work its way down. Best bet is to some how modify your humidifier to sit on the outside, with a tube running from it, into the Martha
Boris, that is absolutely wrong. I have for many years measured humidity in my greenhouses and it's always higher at the top and lower at the bottom. Humidity does not fall by gravity to the bottom. Vapor is a gas, not a solid.
herbie, In the first sentence, you refer to mushrooms on your 'spawn' and in the next you refer to substrate depth. Which is it? Spawn is your inoculant grains, and substrate is your manure, coir or whatever.
Regardless, your mushrooms are proportioned correctly, so FAE is not the problem. Mushroom size is generally related to substrate depth and/or moisture content, so my guess is your substrate is either not thick enough, or is too dry.
I recommend placing the coolmist inside the greenhouse, and then cutting slits and windows in the plastic to allow for natural air circulation to provide the fresh air. If you're using a Kaz or Vicks coolmist humidifier, remove the filter and you'll get much more volume of air, thus more moisture output. RR
Edited by Duggstar (04/13/09 04:08 AM)
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Shroominit
Part Time Mycologist


Registered: 11/29/08
Posts: 4,662
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Re: ultra sonic fae [Re: Duggstar]
#10156330 - 04/13/09 04:54 AM (14 years, 10 months ago) |
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Really don't want to argue about it, if you would like to further discuss, please move it to PM.
It's negligible in this case anyway since you (hopefully) have air currents providing FAE.
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veda_sticks
Cultivator




Registered: 07/29/07
Posts: 14,191
Loc: UK
Last seen: 4 years, 1 month
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humidifiers dont provide fresh air, while they may provide some if they are pumping humid air from the outside...
anyway you dont need a humidifier if your using a terrarium.
shotgun fruiting chamber, perlite, mist and fan a few times a day. Thats all you need.
Untill you move onto the greenhouses/marthas - forget the humidifiers and even then fae is provided by slits in teh greenhouse walls, not the humidifiers.
jeez why does everyone need to complicate things
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