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sunbed lights

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dread View Drop Down
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  Quote dread Quote  Post ReplyReply Direct Link To This Post Topic: sunbed lights
    Posted: 03 July 2006 at 08:46
has anyone heard if sun bed lamps are any good for the flowering stage as a friend can get his hands on a number of them at no cost (ex demo from a tanning booth) are they worth a try or are they a waste of time and energy
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  Quote HomeGrown Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2006 at 10:01
waste of electricity exlamation


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Tepelstreel View Drop Down
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  Quote Tepelstreel Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2006 at 10:05
In one experiment, a researcher found that high THC varieties respond to UVB light by increasing the percentage of THC they produce in a linear ratio to the amount of UVB light they receive. This could be significant.

Using sunbed lamps to supplement the lighting during the last three weeks of flowering will increase THC production, according this study.

BUT, supplement means you'll still need a hps.
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Ganja View Drop Down
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  Quote Ganja Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2006 at 14:48

Also, UV radiation is NOT recommended for working with.

Sun-beds can cause skin damage (sometimes referred to as a 'tan') and eye damage, and can greatly increase your risk of skin cancer.

It seems that UV plays a part in cannabinoid biosynthesis, but since the strongest recorded examples of most cannabis have been grown indoors, under HID lights that produce little UV, I'm not sure that it's an absolutely crucial role.

From my own point of view, most of the strongest weed I've sampled was raised without access to anywhere near the levels of UV available outside. Maybe these particular plants would have been even stronger with increased UV, but it doesn't seem that likely (or, in some cases, physically possible!)

All in all, the possibility of improving a plant with UV is debatable, but the hazardous potential to anyone working under UV lights is certain.

Definite risk versus possible return doesn't add up to a good solution, IMHO.

Also, it's worth noting that professional indoor and greenhouse growers (of cannabis and other crops) don't add UV-emitting lights to their systems (AFAIK).
If plants do rely on UV, then the amount produced by HID lights seems to be enough (an amount which is never powerful enough to tan skin).

Tubes from a tanning bed are designed to emit maximum UV, which is probably overkill for growing. I think safe exposure to such lights (for people) is limited 15 minutes or less.

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  Quote Grasso Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2006 at 17:43
Hello,

good idea, Dread! Such fluorescent lamps not only serve as hemp's work-out but also keep off moths and mites (while mosquitos are attracted by it). Lamps of "018 blue" spectrum type complement greenhouses and window sills and unlikely cause hazards.



UV-A tans in and for a short time while UV-B has a more profound effect. Modern tanning lamps radiate a small defined amount of UV-B. These tubes are replaced rather soon, in order to keep the UV-B dose at a fixed value. The sunbed consists of several man-long tubes close to the skin. Dread should use them in lower concentration. By the way, lamps for reptiles can have several times more UV-B juice. HID UV lamps like Osram Ultramed 400W even more so. The latter and especially laboratory and germicide UV-C lamps can burn the skin within seconds.

Visible light is a narrow range of harmless electro-magnetic radiation. Radiation of short wavelength like roentgen and atomar radiation mostly is very dangerous. Radiation of long wavelength like broadcasts is not harmless either because it penetrates the human body and heats our juices and at some frequencies interfers with body functions; for instance mobiles' microwaves have a wavelength of 20 cm and therefore resonate in one's skull, at least if it is mostly vacant like Homer's is.

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  Quote Sticky Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2006 at 02:19
i have to agree with Ganja, Until someone steps forward with bud that is better than Hid Production and potency i still remain a sceptic?

UV Bud, it will give you a tan, and get you high,The new look in marijuana growers, Ooh he,s brown he must be a grower Cool

sticky so high
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Tepelstreel View Drop Down
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  Quote Tepelstreel Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2006 at 11:21
Originally posted by Ganja

Also, UV radiation is NOT recommended for working with.

Sun-beds can cause skin damage (sometimes referred to as a 'tan') and eye damage, and can greatly increase your risk of skin cancer.

It seems that UV plays a part in cannabinoid biosynthesis, but since the strongest recorded examples of most cannabis have been grown indoors, under HID lights that produce little UV, I'm not sure that it's an absolutely crucial role.

From my own point of view, most of the strongest weed I've sampled was raised without access to anywhere near the levels of UV available outside. Maybe these particular plants would have been even stronger with increased UV, but it doesn't seem that likely (or, in some cases, physically possible!)

All in all, the possibility of improving a plant with UV is debatable, but the hazardous potential to anyone working under UV lights is certain.

Definite risk versus possible return doesn't add up to a good solution, IMHO.

Also, it's worth noting that professional indoor and greenhouse growers (of cannabis and other crops) don't add UV-emitting lights to their systems (AFAIK).
If plants do rely on UV, then the amount produced by HID lights seems to be enough (an amount which is never powerful enough to tan skin).

Tubes from a tanning bed are designed to emit maximum UV, which is probably overkill for growing. I think safe exposure to such lights (for people) is limited 15 minutes or less.



Yes, working with UV radiation can be dangerous. But a system could easily be fixed which turns off the uv lights when entering the growroom, leaving the hid enabled.
I myself haven't smoked any "uv improved" weed, but that probably has as much to do with the fact that almost nobody uses uv to enhance thc production as with the unproven effects on cannabis growing.

As for commercial/professional growers not using uv supplements...i don't think quality is the main concern of pro growers, rather yield and expenses.

Again I don't recommend using these lights, as they contain a risk factor. If you decide to experiment, i'd certainly fix something to turn off those UV's before entering the growroom.
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  Quote Ganja Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2006 at 12:08
Originally posted by Tepelstreel

I myself haven't smoked any "uv improved" weed, but that probably has as much to do with the fact that almost nobody uses uv to enhance thc production as with the unproven effects on cannabis growing.


All outdoor weed, especially plants growing in hot and ozone-depleted parts of the world, is weed that's been raised in an environment of high UV.

So, any modern hybrid grown outdoors can serve as a high-UV comparison to the same strain grown indoors with lights. On the occasions when I've been able to make such a comparison - including clones of the same plant grown in the sun vs indoors - I haven't noticed an increase in potency of the plants grown in full-spectrum sunligh
t.

Originally posted by Tepelstreel

As for commercial/professional growers not using uv supplements...i don't think quality is the main concern of pro growers, rather yield and expenses.


Quality also sells, especially in an over-supplied market like that of the Amsterdam coffeeshops. If commercial weed-growers could significantly (even noticeably) improve their produce by adding UV tubes to the thousands of watts of HID light they already burn, I would think at least a few would do so, if only to make a reputation for themesleves or the strain they grew.

Also, I'm talking about Holland's many artificially-lit greenhouses that grow 'legitimate'  crops such as flowers and specialist plants. AFAIK, no UV is added to these greenhouses either. Naturally, efficiency and production are the most important factors to any commercial grow, legal or illegal, but I believe that any element capable of giving one greenhouse farmer an advantage over the next would be eagerly adopted.

Of course, I'm not seeking to dispute the results of the tests that suggested improved growth or resin production as a result of UV light. But I think it does hold that the potential return of adding UV is outweighed by the more definite risks.


Originally posted by Tepelstreel

  If you decide to experiment, i'd certainly fix something to turn off those UV's before entering the growroom.


Definitely.
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  Quote Grasso Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2006 at 12:46
Hello,

These days I built a 70 Watts grow cabinet which includes a GE F18W/54 daylight fluoro, a halogen bulb and a CFL. In autumn when temperatures have declined I will show you that indoor growing can be a whopping very much alternative, not to say freaked-out, eye-crossing and ear-twisting. Mack's Hemp Feed, Shiva Shanti and Nirvana's Haze will show off and pack on.

Uli
    
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  Quote Ganja Quote  Post ReplyReply Direct Link To This Post Posted: 04 July 2006 at 17:00
Originally posted by Sticky

UV Bud, it will give you a tan, and get you high,The new look in marijuana growers, Ooh he,s brown he must be a grower Cool


Those aren't sunglasses that emoticon is wearing! He's blind, with an orange-gold tan (and pixellated too!) from working in UV!

Yeah, I can just see later generations of UV growers (f3 generation?) with the whole Mad Max, post-apocalypse thing going. Dressed in rags, leathery tans and milky white cataracts covering both eyes.

Sorry, I was just watching the MM trilogy the other day. The first one is the scariest for sure. Low budget, but ... well, not too far off. As the titles say, right at the beginning:


"A few years from now..."

"What's he driving?
That's what hurts. It's one of our V8s. Pursuit Special on methane. 
Very toey!


We're about half a mile off Anarchy Road.
You'll see him any minute now
."
"Better send a meat-truck – Charlie’s copped a saucepan in the throat."

"The last of the V8s ... She sips nitro...Phase 4 heads! 600 horsepower through the wheels! She's meanness set to music and the bitch is born to run!"

Classic.
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