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FrankHorrigan
The Inquisition



Registered: 01/04/11
Posts: 10,573
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Re: Automated Chamber- would this work? [Re: Subspecies]
#18947972 - 10/08/13 02:23 AM (10 years, 3 months ago) |
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I don't measure the humidity in my mini-GH.
And yet it works wonderfully. I get amazing yields off exotics, cubes, and edibles all the same, with only slight adjustments in the timings of the humdifiers.
That is why I say that in my setup I linked the OP, you do not need a hygrometer. You can visually ID issues before they become a problem, even without a casing layer.
However, my issue with your recommendation is that it does not help the fact that the OP's idea is full of flaws that will hinder his cultivation progress. A hygrometer alone will not fix that.
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Subspecies
Stranger

Registered: 07/07/13
Posts: 42
Last seen: 10 years, 3 months
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Re: Automated Chamber- would this work? [Re: FrankHorrigan]
#18948002 - 10/08/13 02:46 AM (10 years, 3 months ago) |
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And that may well suit him perfectly Frank. Or it may not, and it may not suit everyone else.
Theres nothing wrong with options.
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Rauhfasertapete
The Final Cauliflower of Doom!



Registered: 02/22/13
Posts: 214
Loc: Upper Franconia
Last seen: 7 years, 11 months
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Re: Automated Chamber- would this work? [Re: NOM NOM]
#18948070 - 10/08/13 03:33 AM (10 years, 3 months ago) |
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A hygrometer with a probe head that is permanently inside the chamber doesn´t really work. when your humidity is high, the probe head will just get wet over time, and won´t workanymoe. If you want to measure humidity, you need to do it by manually. However, a few per cent more or less are not a problem as long as its somewhere above 70 or 80%
Isnt a hepa-filtered intake for FAE a bit overdone? Besides, your fresh air will be quite a bit dry. I sometimes used to connect a membrane pump to a water filter (= a bottle full of water, maybe with some mineral wool in it to make the bubbles float up more slowlly in order to increase the humidity uptake and the filtering).
Hydrogen peroxide to keep the water clean works, but it sometimes corrodes plastic and rubber. I prefer PVP-iodine which works the same way as peroxide, but isnt as agressive. it just has this strong scent which is not quite nice. Sorbic acid can also be used, although it doesn´t always kill each and any microbes in the water. Its non-toxic for many higher organsims and usually used as a preservant for fruit juices (I sometimes used E202 = Potassium sorbate).
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Subspecies
Stranger

Registered: 07/07/13
Posts: 42
Last seen: 10 years, 3 months
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If your calibration cycle is not regular enough to deal with probe saturation, alternating sampling and drying phases can be done(automated of course). If you want accuracy, you will need to calibrate regularly anyway. Oversaturation, and therefore excess condensation can be controlled by the automated system. Electronic probes are installed in saturated environments, the precedent is there. I'm looking into psychrometer(wet and dry bulb) performance atm, seeing how they cope with extended high humidity. Do you have any experience with them?
With the water filter, what about benzyl alcohol that injectors use to make bacteriostatic water? Seems like it could also be a possibility. I have no idea of its stability. H2O2 is notoriously unstable(though not as bad as many make out).
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PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 11 hours
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Re: Automated Chamber- would this work? [Re: Subspecies]
#18948281 - 10/08/13 06:03 AM (10 years, 3 months ago) |
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Quote:
Subspecies said: Oversaturation, and therefore excess condensation can be controlled by the automated system.
You do realize that condensation is from a temperature difference and not from the air being over saturated right?
You can have 100% humidity with absolutely no condensation, and you can have 10% humidity with some condensation.
Just putting that out there....
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Subspecies
Stranger

Registered: 07/07/13
Posts: 42
Last seen: 10 years, 3 months
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Re: Automated Chamber- would this work? [Re: PussyFart]
#18948489 - 10/08/13 07:50 AM (10 years, 3 months ago) |
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Yeah I do realise that, but temperature control(even a differential) is relatively easy to design and attain, so I didn't bother addressing it. If you temperature cycle, dropping the temp on saturated air will force excess water to condense. If you lower humidity first(or simultaneously) it can be avoided. Similarly over-misting/fogging a saturated environment will lead to droplet accumulation. A properly designed and built system can control these things - automatically.
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 3 days
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Re: Automated Chamber- would this work? [Re: NOM NOM]
#18948541 - 10/08/13 07:51 AM (10 years, 3 months ago) |
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This thread has been closed.
Reason: This thread sucks.
Rather than arguing the same failed points from the last 20 years of OMC as if they were the very first ones to think of this stuff, noobs would be well advised to learn to use the site search engine.
It's the dream of every young geek who enters the hobby to fully automate his setup and then hide it in a closet where mommy can't find it, as if she never goes there. Noobs also obsess over humidity for some reason when fresh air and light are far more important.
Such is not the purpose of this site, nor has science developed transducers which will operate in the conditions we require. Lazy people always fail at this because you quite frankly need to be checking your crop several times daily to remove moldy substrates and do other chores. RR
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