Home | Community | Message Board

MagicBag Grow Bags
This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Kraken Kratom Shop: Kratom Capsules for Sale

Jump to first unread post Pages: < Back | 1 | 2 | 3  [ show all ]
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
Invisiblefastfred
Old Hand
Male User Gallery

Folding@home Statistics
Registered: 05/17/04
Posts: 6,899
Loc: Dark side of the moon
Re: your thoughts or suggestions on my laminar flow hood project [Re: t3chnobily]
    #18072869 - 04/07/13 04:10 PM (11 years, 1 month ago)

I would be careful with liquids or fog.  It wouldn't be too hard to get a short or shock from the high voltages involved with fluorescent lights.

For $15 it's worth having one around even if you just play around with it now and again.

Extras: Filter Print Post Top
OfflineKizzle
Misanthrope
 User Gallery

Registered: 08/30/11
Posts: 9,866
Last seen: 2 months, 9 days
Trusted Cultivator
Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18075338 - 04/08/13 03:42 AM (11 years, 1 month ago)

Quote:

But "LYSOL Professional Brand III Disinfectant" is $9.99 at my local MegaMart, and you can certainly reduce your disinfectant consumption significantly by letting UV do the work.



How? What do you not need to disinfect once you have the lamp?


--------------------

Extras: Filter Print Post Top
Invisiblefastfred
Old Hand
Male User Gallery

Folding@home Statistics
Registered: 05/17/04
Posts: 6,899
Loc: Dark side of the moon
Re: your thoughts or suggestions on my laminar flow hood project [Re: Kizzle]
    #18075424 - 04/08/13 04:58 AM (11 years, 1 month ago)

Quote:

How? What do you not need to disinfect once you have the lamp?




You still have to wipe things down and use decent sterile technique.  Just imagine that UV light slowly cooking everything alive in it's light.  It's not going to get anything that's shadowed, or penetrate through plastic.

Using 1:10 bleach solution is dirt cheap and works the best.  I just mentioned lysol because people use it and it leaves a residue.

Extras: Filter Print Post Top
OfflinePussyFart
Retired Cultivation Extrodinaire
Male


Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 2 days, 21 hours
Trusted Cultivator
Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18075459 - 04/08/13 05:42 AM (11 years, 1 month ago)

So I googled "uv light penetrate plastic" and found this.

""""Short wave ultraviolet light (100 to 300 nm) is used to kill bacteria, hasten chemical reactions (as a catalyst), and is also valuable in the identification of certain fluorescent minerals. Unlike long wave UV, the short wave UV cannot pass through ordinary glass nor most plastics. The shortest wavelengths cannot even travel very far through the air before being absorbed by oxygen molecules as they are converted into ozone.""""
http://answers.yahoo.com/question/index?qid=20090121040709AARwZGC

Then I googled "ozone health risks" and found this.

""""Studies have indicated that exposure to ground-level ozone air pollution, even at very low levels, can cause a number of respiratory health effects--particularly over time.""""
http://www.sbcapcd.org/sbc/ozonehealth.htm

""""Breathing ground-level ozone can result in a number of health effects that are observed in broad segments of the population. Some of these effects include:

Induction of respiratory symptoms
Decrements in lung function
Inflammation of airways
Respiratory symptoms can include:

Coughing
Throat irritation
Pain, burning, or discomfort in the chest when taking a deep breath
Chest tightness, wheezing, or shortness of breath
In addition to these effects, evidence from observational studies strongly indicates that higher daily ozone concentrations are associated with increased asthma attacks, increased hospital admissions, increased daily mortality, and other markers of morbidity.  The consistency and coherence of the evidence for effects upon asthmatics suggests that ozone can make asthma symptoms worse and can increase sensitivity to asthma triggers.""""
http://www.epa.gov/apti/ozonehealth/population.html



Now is it just me, or does this just seem unsafe to run in a home?

I personally would not want to be generating ozone all the time the bulb is running, it is killing germs sure, but it is killing me too.

Extras: Filter Print Post Top
Invisiblefastfred
Old Hand
Male User Gallery

Folding@home Statistics
Registered: 05/17/04
Posts: 6,899
Loc: Dark side of the moon
Re: your thoughts or suggestions on my laminar flow hood project [Re: PussyFart]
    #18076345 - 04/08/13 11:42 AM (11 years, 1 month ago)

I'm plenty familiar with ozone.  And I can tell you that a 15-25W UV tube does not generate much, if any, ozone.  Certainly not dangerous levels.

You get a lot more ozone out of an electrical ozone machine on the normal setting you would use it at.  I'm not a proponent of breathing ozone, but ozone levels from a machine aren't particularly dangerous, and the UV light certainly doesn't come anywhere near them.

I pulled up a little quote from a corona vs. UV ozone generator site...
Quote:

Highest concentration of ozone that can be produced by 185-nm UV lamp is 0.2 percent by weight, approximately 10% of the average concentration available by corona discharge




So we're talking a different wavelength of UV light, and even then it's only 10% of what those electrical machines can produce.

You can also easily smell ozone, so there should be no problems.  Even if they mixed up the bulbs you would start smelling ozone long before it became dangerous.


-FF

Extras: Filter Print Post Top
OfflinePussyFart
Retired Cultivation Extrodinaire
Male


Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 2 days, 21 hours
Trusted Cultivator
Re: your thoughts or suggestions on my laminar flow hood project [Re: fastfred]
    #18077615 - 04/08/13 03:42 PM (11 years, 1 month ago)

:asianofapproval:

Extras: Filter Print Post Top
Jump to top Pages: < Back | 1 | 2 | 3  [ show all ]

Kraken Kratom Shop: Kratom Capsules for Sale


Similar ThreadsPosterViewsRepliesLast post
* Huge Laminar Flow Hood? Pugslee_Atoms420 2,642 8 04/12/03 10:17 AM
by debianlinux
* Flow Hood
( 1 2 all )
Shpongloid 7,349 33 08/20/04 10:22 AM
by hyphae
* 24''x24'' Flow Hood Questions
( 1 2 all )
Cow Shit Collector 11,666 26 02/07/05 11:27 AM
by Arp
* Poor Man's Flow Hood Cow Shit Collector 3,701 9 09/01/03 05:55 AM
by Cow Shit Collector
* Laminar Flow Q - Maintaining Sterility? quart_o_cunt 2,225 8 03/04/02 03:38 PM
by cookiewhore
* laminar flow hood ebay auction Anonymous 1,096 2 12/01/02 12:43 PM
by FunGuyToBeWith
* Tons of contaminations WITH Flow Hood!!! mobyd 3,165 5 05/20/03 07:31 PM
by cyankid
* flow hood ast 2,327 11 07/16/02 04:41 AM
by Una

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: RogerRabbit, Pastywhyte, bodhisatta
7,278 topic views. 1 members, 2 guests and 1 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.022 seconds spending 0.007 seconds on 14 queries.