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Offlinekurtis48239
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humidistat
    #8068583 - 02/25/08 01:30 PM (15 years, 11 months ago)

can i hook up a humidstat to a cvs collmist in my grow room anyone ever had any success with this


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OfflineRogerRabbitM
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Re: humidistat [Re: kurtis48239]
    #8068812 - 02/25/08 02:51 PM (15 years, 11 months ago)

Very few humidistats will stand up to the spores that mushrooms puke out on every flush. The spores clog up the humidistat and ruin it. Most of us have switched over to cycle timers, and simply dial in the timer to provide the desired humidity.

I've been meaning to experiment with wrapping the stat with tyvek to see if that fixes the spores problem, but haven't gotten around to it yet.
RR


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Offlinekurtis48239
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Re: humidistat [Re: RogerRabbit]
    #8068918 - 02/25/08 03:27 PM (15 years, 11 months ago)

thank u


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Offlinemandelbrah
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Re: humidistat [Re: RogerRabbit]
    #8226165 - 04/01/08 08:49 PM (15 years, 9 months ago)

Thanks to RogerRabbit for the warning about spores runing humidistats.  Your knowledge is invaluable to this forum. :rockon:

I've been trying to devise a way to protect the hairlike mechanism in my humidistat from the spore assault you've been describing, RR.  Tyvek is gas permeable, but I suspect it will maintain a humidity gradient that would cause less than accurate performance.

I like the idea of "set and forget" performance of a properly functioning humidistat coupled with an ultrasonic in a martha/greenhouse, but I'd hate to ruin a moderately expensive device by exposing it to inevitable spore clouds.

There has to be some kind of humidistat housing we can rig that would allow it to accurately share the atmosphere of the martha/greenhouse/etc while protecting said humidistat from spores.

In a non-turbulent environment, spores simply follow gravity.  In a windy environment, spores are so weightless that they follow air currents all around a closed chamber, right?

Even introducing positive pressure at the top of a martha would likely stir up spores via turbulence, so mounting a humidistat above the fruiting levels may not suffice, even if it was in a housing that had thin slits to allow humidity equilibrium.

What do you think?  If someone had a spore free chamber, spore barriers(tyvek, polyfill, etc.), a humidistat, and a hygrometer (to place in the main part of the greenhouse as a control), it stands to reason that you could make a humidistat chamber that would be spore-proof and experiment to figure out which spore barrier material was faster in attaining humidity equilibrium with the rest of the chamber.

I would also be concerned with liquid moisture buildup inside that chamber which could throw off the accuracy of the humidistat.

So what other spore barrier materials would you suggest other than tyvek or polyfill?  What physical measures could be employed to minimize spore exposure to a humidistat?

Could it be as simple as slapping some micropore tape on the vents of the humidistat?

Let's figure this out and make marthas even more kickass.  Especially since humidistats are much less expensive than cycle timers!

Respect to the Shroomery.


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Offlinemandelbrah
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Re: humidistat [Re: mandelbrah]
    #8236316 - 04/03/08 11:25 PM (15 years, 9 months ago)

bumpz...C'mon, there are enough geniuses here to chime in on this. What's small enough to keep out a spore but large enough to allow free water vapor to pass through?


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Offlineperosiste
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Re: humidistat [Re: mandelbrah]
    #8237143 - 04/04/08 05:25 AM (15 years, 9 months ago)

So heres an idea ill see how well I can describe it.

At or near the bottom of your fruiting chamber attach a dryer hose or large peice of pipe. Something decent to allow ample air exchange. On the other end of the hose attach a secondary chamber large enough for a small ionic breeze and a shelf or space above it. Place the IB in the bottom of the chamber, and as high above it as you can get place the humidistat.

Now mind you this is a crazy McGuyver idea, but the theory behind it is that the particulate matter in the air coming from the fruiting chamber gets pulled from the air and the humidity remains in the secondary chamber. I know that actual ionic breezes are expensive but there are several knockoffs available and if you would like I could PM you the plans for one (IB) that me and my roomies built in college.


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Edited by perosiste (04/04/08 05:27 AM)


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OfflineGr8fuljohn
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Re: humidistat [Re: mandelbrah]
    #9703045 - 01/29/09 10:36 PM (15 years, 2 days ago)

TRY A PUMMUS STONE THAT MAY WORK


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