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OfflineHappyHigh
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Inline uv light?
    #26392689 - 12/20/19 03:58 PM (4 years, 1 month ago)

https://www.amazon.com/Uvonair-Inline-Duct-Booster-Ozonator/dp/B00819ANNQ/ref=sr_1_1?qid=1576882417&sr=8-1&srs=8278929011

just for incoming air in a sealed spawn room?

not really that model.. might make my own.


--------------------
Had I the heavens' embroidered cloths,
Enwrought with golden and silver light,
The blue and the dim and the dark cloths
Of night and light and the half light,
I would spread the cloths under your feet:
But I, being poor, have only my dreams;
I have spread my dreams under your feet;
Tread softly because you tread on my dreams.


Edited by HappyHigh (12/20/19 04:00 PM)


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: HappyHigh] * 1
    #26392763 - 12/20/19 04:41 PM (4 years, 1 month ago)

UV sanitization is usually a gimmick. Real UV sanitization uses bulbs that give you an instant burn should you cross the beams path. These are bulbs that are 500-1000 watts per inch of tube. And even then the technology is usually not called a sterilizer due to liabilities since it can't be validated to sterilize in most cases either and that is in real deal industrial UV germicidal use. These bulbs for hoods and shit are a good waste of money tho


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InvisibleStygianKnight
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Re: Inline uv light? [Re: bodhisatta]
    #26392820 - 12/20/19 05:23 PM (4 years, 1 month ago)

The ozone created by that unit is doing the majority of the cleaning, the UV alone isn’t killing anything, especially if the bulbs are open air like that and allowed to be looked at (or they’re doing something and will also fry eyeballs. UV-C is dangerous, don’t mess with it.)

Ozone, or O3 is an oxidizer and has been found to be unhealthy for some individuals to breath at low levels and unhealthy for everyone at high levels.


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OfflineTrifaziux
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Re: Inline uv light? [Re: HappyHigh]
    #26392823 - 12/20/19 05:28 PM (4 years, 1 month ago)

If you get yourself a proper quartz mercury vapor tube it will produce enough UV in the UVC region to sanitize any surface including the surfaces of dust particles, but UV doesn't penetrate deep into substances in some cases even ordinary glass can attenuate UV also UV is absorbed by oxygen molecules in the air producing oxygen radicals which then recombine with oxygen molecules to prodice ozone. Ozone on the other hand is a very powerful oxidising agent which will oxidise anything organic given some time. That is why it is generaly not recommended to expose yourself to high levels of ozone.
Over time I have aquired some medical 1000w quartz mercury vapour bulbs that I use to help sterilise my lab before work.
Rather than using UV radiation to sanitize incoming air, wouldn't it be a better idea to just filter the intake air through a hepa filter? Much safer for you, your skin, eyes and your lungs.


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-T-


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OfflineHappyHigh
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Re: Inline uv light? [Re: Trifaziux]
    #26392844 - 12/20/19 05:44 PM (4 years, 1 month ago)



--------------------
Had I the heavens' embroidered cloths,
Enwrought with golden and silver light,
The blue and the dim and the dark cloths
Of night and light and the half light,
I would spread the cloths under your feet:
But I, being poor, have only my dreams;
I have spread my dreams under your feet;
Tread softly because you tread on my dreams.


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OfflineTrifaziux
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Re: Inline uv light? [Re: HappyHigh]
    #26392886 - 12/20/19 06:09 PM (4 years, 1 month ago)

Quote:

HappyHigh said:
https://www.amazon.com/Horti-Control-DS6-Dust-Shroom-6/dp/B0046UWI14/ref=sr_1_4?keywords=Horti-Control+dust+Shroom&qid=1576888933&s=lawn-garden&sr=1-4


says .1 micron doesn't have to be perfect, just trying to have a lil preventative measure.




Not sure about it's efficiency at .1um particle size. I think this thing would be a good prefilter for a normal hepa setup. You don't have to buy an expensive laminar-flow type filter for such purpose simple ones made for air purifiers with efficiency of 97-99% at .3 or .4um would do just fine. I have used a simple homemade air filtration setup for my lab made out of an old inline fan and a cylindrical hepa filter just to keep the dust counts low in the incubation area. Perhaps you could use something similar for you air intake? In my oppinion you don't have to keep your spawn incubation area sterile, semi-sterile techniques and general cleanliness is sufficient.


--------------------
-T-


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: StygianKnight] * 1
    #26393017 - 12/20/19 07:29 PM (4 years, 1 month ago)

Quote:

StygianKnight said:
The ozone created by that unit is doing the majority of the cleaning, the UV alone isn’t killing anything, especially if the bulbs are open air like that and allowed to be looked at (or they’re doing something and will also fry eyeballs. UV-C is dangerous, don’t mess with it.)

Ozone, or O3 is an oxidizer and has been found to be unhealthy for some individuals to breath at low levels and unhealthy for everyone at high levels.



This


This 6000 watt bulb blew out because of inadequate cooling. The bulbs get so hot the quartz glows red and would sag downwards if not cooled enough during operation. Like what happened to this one. These are >$300 bulbs. They make a bunch of ozone that has to be vented as well. The exhaust is well over 180F after 10 feet of 6" pipe

Bacteria survives the voyage from African sand dunes to the middle of America being absolutely drenched by the sun the entire time and happily lives.


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: bodhisatta]
    #26393042 - 12/20/19 07:41 PM (4 years, 1 month ago)

Had a guy reach into one of these uv curing units while it was on once to grab a tipped bottle. Probably a second or two of exposure. He was out of work for three days because of the sunburn and flashed his eyes too and said it burned like fuck for a couple days he couldn't even sleep


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OfflineSolipsis
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Re: Inline uv light? [Re: bodhisatta]
    #26393880 - 12/21/19 11:24 AM (4 years, 1 month ago)

Yeah thats kinda strange but indeed.. blue light seems to be able to quickly screw up melatonin in your brain if you see it (i guess because it is an indicator of daytime right).

I experiment with UV-C for sanitizing effects and especially for irradiating spores but not good effects yet with the former - after one try though. I have goggles and thorough shielding foil etc all around my cabinet and mine is only 25W. However i got an indirect glimpse of it once when i was still perfecting the setup and without goggles and while it didn't burn burn and wasnt direct exposure, i did somehow feel like i wouldn't be able to sleep again and that made me a bit loopy.
Unfiltered tv, phone and computer screens can do this to people too but usually not in a bolus dose so it is not quite as harsh as that was. Still, insomnia and headache galore so use a filtering app.

Even if the UV from your UV-C bulb gets absorbed its still friggin bright blue-purple light.

True that it's considered unreliable and not sterilizing, but together with bleach (still need to get cheap peroxide in quantity) and just long exposure time from what i understand it should be possible and effective but never reliable.

But if its used for aquaria then since there is water instead of air there is much less oxygen so negligible ozone? which i guess is a relief for the fish hehe..

Some people seem to use UV-C i think treating the air before it is HEPA FH filtered but that seems a little silly to me tbh. UV inside flowhood cabinets seems more common in professional setting afaik to also just help desinfect the working area before use, in one go, together with the running FH. correct me if im wrong


Edited by Solipsis (12/21/19 11:28 AM)


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: Solipsis]
    #26393885 - 12/21/19 11:31 AM (4 years, 1 month ago)

The blue light concern is so overblown. Every day we all get exposed to 100x to 1000x of times more light from the same blue spectrum from our own sun than any kid does in a day glued to screens.


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OfflineTrifaziux
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Re: Inline uv light? [Re: Solipsis]
    #26394163 - 12/21/19 02:55 PM (4 years, 1 month ago)

You're right, they use UVC bulbs in microbiological cabinets to desinfect working surfaces.
UVA and UVB is shit for desinfecting anything.
There is one experiment I've been thinking about for some time: taking a petri dish, streaking it with with bacteria then exposing one half of it to UVC and letting it incubate -comparing the two sides. Not sure what power density to use though.


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-T-


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Invisiblemurderlabz
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Re: Inline uv light? [Re: bodhisatta]
    #26394530 - 12/21/19 07:08 PM (4 years, 1 month ago)

Quote:

bodhisatta said:

This


This 6000 watt bulb blew out because of inadequate cooling. The bulbs get so hot the quartz glows red and would sag downwards if not cooled enough during operation. Like what happened to this one. These are >$300 bulbs. They make a bunch of ozone that has to be vented as well. The exhaust is well over 180F after 10 feet of 6" pipe

Bacteria survives the voyage from African sand dunes to the middle of America being absolutely drenched by the sun the entire time and happily lives.




Bod, is that a yeast lab? :smile:


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: murderlabz]
    #26394616 - 12/21/19 08:31 PM (4 years, 1 month ago)

No


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OfflineSolipsis
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Re: Inline uv light? [Re: bodhisatta]
    #26395063 - 12/22/19 07:13 AM (4 years, 1 month ago)

Quote:

bodhisatta said:
The blue light concern is so overblown. Every day we all get exposed to 100x to 1000x of times more light from the same blue spectrum from our own sun than any kid does in a day glued to screens.




This is for people who don't try to sleep during the daytime but at night when there naturally aren't such levels of blue light or hardly any light really except maybe the moon but we're not talking about trying to sleep right in full blown moonlight.

It does affect your circadian rhythm but not everyone is equally sensitive to having that rhythm / one's melatonin levels disturbed.

@ Trif: i am pretty sure i have seen such experiments and yeah it can pretty much kill half a petri dish that way.

Ive also read about research using UV-C on fungal cultures to get mutants but this is actually not an efficient way to do it, irradiating mycelium with it. Still it can work.


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InvisiblebodhisattaMDiscordReddit
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Re: Inline uv light? [Re: Solipsis] * 1
    #26395196 - 12/22/19 08:51 AM (4 years, 1 month ago)

Thing about uv-c is that it isn't outright lethal. It just mangles dna to make the organisms unable to replicate or continue functioning. But microorganisms are extremely good at fixing themselves. So in many cases you may see a 99.999% reduction like you would with a sanitizer like alcohol but the population recovers faster after UV treatment


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Offlinedamando
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Re: Inline uv light? [Re: bodhisatta]
    #26426764 - 01/10/20 03:33 PM (4 years, 19 days ago)

I remember back in the 80s to 90s about adding magnets to the plumbing to reduce calcium build up in the pipes. Just a gimmick.


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