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OfflineSeussA
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Ozone on mycelium/fruitbodies?
    #611751 - 04/18/02 10:24 AM (14 years, 7 months ago)

Does anybody know what the effects of higher than normal levels of ozone would have inside the terrarium? I am building a filter box for my friend and I have been trying to decide if I should put in a UV-C lamp between the HEPA and the blower. The ultraviloet lamp produces some ozone. The filter box is going to be used to provide constant air exchange to the growing environment. The ultraviolet lamp wil be fully enclosed; there will be no UV light (from the air exchange source) visible inside the growing environment.


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Anonymous

Re: Ozone on mycelium/fruitbodies? [Re: Seuss]
    #612013 - 04/18/02 04:46 PM (14 years, 7 months ago)

That really depends upon the concentration of the ozone. In high concentrations, it's more effective than bleach at killing all sorts of things. See if you can find any specs from the manufaturer as to how much ozone the light will produce. A while back, using google, I found some websites that listed the effective concentrations for killing various things. I've since started experimenting with using ozone instead of a PC to sterlize substrate and left it sitting around for 3 weeks with no signs of contams. So I would be worried about killing the mycelium.


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OfflineDinoMyc
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Re: Ozone on mycelium/fruitbodies? [Re: Seuss]
    #612198 - 04/18/02 08:04 PM (14 years, 7 months ago)

UV is a possability.. it is used for aquariums quite often, and in the biomedical industry..
Ozone is a big no if this is indoors, and a rather bad idea even outside.. Ozone will kill you.. very very bad idea..


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OfflineSeussA
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Re: Ozone on mycelium/fruitbodies? [Re: DinoMyc]
    #612770 - 04/19/02 11:05 AM (14 years, 7 months ago)

I have read the MSDS for ozone, but that only ralates to humans :smile:

I don't know that UV-c would work for sterilizing substrates unless you can figure out a way to ensure that the light is able to penetrate the grain,brf,vermiculite,whatever.  It would sterilize the surfaces, but I don't know about anything else.  (Edit: I am assuming that the ozone (gas) can only get to places the light can... now that I think about it, pressurized ozone would be awesome, but a fairly large fire/exposion hazard as well... compressed oxidizing gases can be nasty).

> Ozone will kill you.
To be honest, lots of things will kill you.  In this case, UV-c is worse for you than the ozone it produces.

I will have to do some more digging and see if I can find the production rate of ozone for the bulb I am thinking about using (at 15 watts if anybody knows the answer right off).


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Edited by Seuss (04/19/02 11:08 AM)


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Anonymous

Re: Ozone on mycelium/fruitbodies? [Re: Seuss]
    #612829 - 04/19/02 12:34 PM (14 years, 7 months ago)

Ozone (O3) is used to sterilize many things. It is used in France for municipal water treatment instead of chlorine, it is used in swimming pools and jacuuzis to reduce the needed amounts of antimicrobial chemicals. It is used increasingly in the food industry. It is more effective in the presence of some moisture and will go anywhere the air goes. The advantage of it is that it is unstable and will revert to regular oxygen (O2) fairly quickly, leaving no chemical residue (a great advantage in food processing). I don't think it causes an explosive environment any more than regular oxygen.


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Invisibledurban_poison
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Re: Ozone on mycelium/fruitbodies? [Re: Seuss]
    #612859 - 04/19/02 01:23 PM (14 years, 7 months ago)

ozone will kill you? I really dont think so because I used to use ozone generators for a long time and they all came with a huge explanation why ozone is so safe and how it is used for removing odors. The UV bulb on the other hand is known to damage eye sight. Also wouldnt we all be in trouble if ozone was deadly every time a thunderstorm happens or oxy therapy would be especially deadly? I was wondering my self the effect ozone would have on fungus. Would it be benefical with the extra oxygen and would it kill that damn green.


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OfflineSeussA
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Re: Ozone on mycelium/fruitbodies? [Re: ]
    #612910 - 04/19/02 02:47 PM (14 years, 7 months ago)

> I don't think it causes an explosive environment any more than regular oxygen

Correct, but under pressure oxygen is very dangerous as a gas. I assume ozone is as well. If there are any organics (such as grease and other lubricants) in the high pressure lines or valves an explosion can (and usually will) result.





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OfflineDinoMyc
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Re: Ozone on mycelium/fruitbodies? [Re: durban_poison]
    #613114 - 04/19/02 07:24 PM (14 years, 7 months ago)

Ozone causes many respiratory problems, is an oxidant (you know all that attention paid to anti-oxidants...).
Remember that literature is distributed by the manufacturer. Of course it is in support of their product! Even most manufacturers cite concerns in cases of high concentration. Osha limits levels to .1ppm/8h and short term to .3ppm.
"Ozone has a pungent odor, is a strong irritant, and is highly toxic by inhalation. It is strong oxidizing agent and a dangerous fire and explosion risk when in contact with organic materials. It is more soluble in water than oxygen;"
http://www.osha.gov/dts/sltc/methods/inorganic/id214/id214.html
"Ozone is highly injurious and potentially lethal to experimental animals at concentrations as low as a few parts per million (ppm). A study in which young mice were exposed to 1 ppm ozone for 1 or 2 days reported damage to alveolar tissue. Human populations chronically exposed to lower concentrations of ozone were observed to have adverse changes in lung function. Human volunteers exposed to 0.5 ppm ozone for 3 hours per day, 6 days per week, for 12 weeks showed significant adverse changes in lung function. Another report showed a 20 percent reduction in timed vital lung capacity in persons exposed to average concentrations of ozone of 1.5 ppm for 2 hours. Welders exposed to maximal ozone concentrations of 9 ppm were observed to have pulmonary congestion. Recent studies indicate ozone may contribute to inflammation in human bronchial tubes. Further information regarding toxic effects of ozone can be found in "
In addition, most (this is from my memory of several reports on air sterilization and filtration) ozone generators cause a drastic and dangerous buildup of ozone beyond acceptable levels.
---------
forgot the EPA report:
"Some vendors suggest that these devices have been approved by the federal government for use in occupied spaces. To the contrary, NO agency of the federal government has approved these devices for use in occupied spaces. "

http://www.epa.gov/iaq/pubs/ozonegen.html#how%20is%20ozone%20harmful


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If I made affirmation, I apologize.
I merely came to listen, came to say.


Edited by DinoMyc (04/19/02 07:39 PM)


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Anonymous

Re: Ozone on mycelium/fruitbodies? [Re: durban_poison]
    #613762 - 04/20/02 01:08 PM (14 years, 7 months ago)

Ozone generators do not provide any extra oxygen, they just convert the O2 to O3. The O3 is much more unstable than the O2 and reacts very easily with other substances, giving up the extra oxygen molecule. That's why it can be dangerous in high concentrations (burning of the eyes and lungs).


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Mushrooms, Mycology and Psychedelics >> Advanced Mycology

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