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 sniffy
I Love Peyote
Registered: 07/10/08
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 UV light.
#8865526 - 09/02/08 12:10 PM (3 months, 20 hours ago) |
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I bought a new UV light 40w. i was woundering if i would be good for my cacti over winter? i only have 3 lophs and 1 small san pedro (5cm)?
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just me
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 Re: UV light. [Re: sniffy]
#8865540 - 09/02/08 12:12 PM (3 months, 20 hours ago) |
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is that a blacklight?
you can grow tumors with that...thats about it i think
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sniffy
I Love Peyote
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Re: UV light. [Re: just me]
#8865553 - 09/02/08 12:15 PM (3 months, 20 hours ago) |
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Is it any good then?
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just me
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Re: UV light. [Re: sniffy]
#8865621 - 09/02/08 12:29 PM (3 months, 19 hours ago) |
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i dont think so sniffy,
its good for "while using dr00gz"
but not for growing...anything
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sniffy
I Love Peyote
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Re: UV light. [Re: just me]
#8865692 - 09/02/08 12:45 PM (3 months, 19 hours ago) |
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how wont it work? i dont understand how it wont. its UV so why wouldnt it?
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just me
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Re: UV light. [Re: sniffy]
#8865698 - 09/02/08 12:46 PM (3 months, 19 hours ago) |
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its whats called a blacklight yeah?
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sniffy
I Love Peyote
Registered: 07/10/08
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Re: UV light. [Re: just me]
#8865707 - 09/02/08 12:48 PM (3 months, 19 hours ago) |
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i think it is.
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just me
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Re: UV light. [Re: sniffy]
#8865714 - 09/02/08 12:50 PM (3 months, 19 hours ago) |
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yeah man, im pretty sure it has to do with the spectrum, and maybe the kelvins and color temp, etc.
im not a scientist, i just know what doesnt work
if anyone has ever grown anything with a blacklight, chime in
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sniffy
I Love Peyote
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Re: UV light. [Re: just me]
#8865728 - 09/02/08 12:53 PM (3 months, 19 hours ago) |
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i just looked at the box and it is a black light.what bulb can i put that is good for cacti?
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just me
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Re: UV light. [Re: sniffy]
#8865734 - 09/02/08 12:54 PM (3 months, 19 hours ago) |
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flourescent
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sniffy
I Love Peyote
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Re: UV light. [Re: just me]
#8865746 - 09/02/08 12:56 PM (3 months, 19 hours ago) |
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The bulb in it is a flourescent bulb 40w.
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just me
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Re: UV light. [Re: sniffy]
#8865752 - 09/02/08 12:57 PM (3 months, 19 hours ago) |
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yeah blacklight tho,
im talkin like a shop light
long white tube
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sniffy
I Love Peyote
Registered: 07/10/08
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Loc: Wales
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Re: UV light. [Re: just me]
#8865767 - 09/02/08 01:00 PM (3 months, 19 hours ago) |
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hahaaha oh. im so dumb.
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just me
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Re: UV light. [Re: sniffy]
#8865778 - 09/02/08 01:01 PM (3 months, 19 hours ago) |
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may want to start a new thread asking what K the lights need to be for indoor growing.
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cpw1971
Cactiaholic
Registered: 10/07/06
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Re: UV light. [Re: just me]
#8865985 - 09/02/08 01:50 PM (3 months, 18 hours ago) |
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6500 K is good for cacti.
And you are better off getting a 4 foot T8 shoplight fixture for $10 and bulbs for another $10. Some people on here may say get CFL but they arent as efficient. 4 footers have more lumens per watt and cover more area.
You can also overdrive them as much as 4x by installing bigger electronic ballasts into them. I have a couple sets I overdriven by 2x and it made them much brighter and I used them for 4 years so far with no problems.
Edited by cpw1971 (09/02/08 01:51 PM)
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uarewotueat
Peyote Farmer
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Re: UV light. [Re: sniffy]
#8866372 - 09/02/08 02:59 PM (3 months, 17 hours ago) |
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Quote:
sniffy said:
good for raves, no good for plants!
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kadakuda
The Great"Green".......East
Registered: 05/21/04
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think of the light spectrum. i hate typing this shit, so i scanned a pic a while ago that shows it very clearly!
plants need to eat light, the light they eat is in the visible spectrum (red to blue basically). UV is PAST this on the blue/violet end (hence "Ultra-Violet). this means the chlorophyl will not eat the UV-A/B/C.
black lights are UVA, usually 310-400 Nm. Visible light is 400-750 (roughly) nm. "daylight" fluoros are usually in the 400-500 nm range or something. the red end is 600-700 usually. just think of it this way, plants only eat what we can see. black lights have a little bit of visible light, but not much at all. black light blue lights (BLB) have filtered blue glass that does some weird shit i forget 
for colour temperature (Kalvins) see this old chart i got from philips.
for your cacti go buy a 6500K light and a small 2700K light, but many cacti will stretch bad under a few light bulbs 
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uarewotueat
Peyote Farmer
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Re: UV light. [Re: kadakuda]
#8870909 - 09/03/08 10:30 AM (2 months, 30 days ago) |
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cpw1971
Cactiaholic
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why not just grow plants in the dark??......
http://www.keelynet.com/biology/darklife.htm
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lqdtrance
Rogue Agent
Registered: 04/12/08
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Loc: NY
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Re: UV light. [Re: cpw1971]
#8873055 - 09/03/08 06:21 PM (2 months, 30 days ago) |
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Very intriguing. Sounds like a good science project.
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