Small Trial Led Garden - Page 3

rastadoor · #21 02-05-2008, 06:36 PM

anything? post a pic

rolln1up · #22 02-05-2008, 06:43 PM

I'm going to be watching this I have high hopes for LEDs I really hope you have success good luck

natmoon · #23 02-05-2008, 07:16 PM

The guy who started this thread hasn't been back here for months.
Another dude called munchbox has a grow journal using led panels on the go at the moment if you want to see leds in action.
Look for it in the grow journals section

T.H.Cammo · #24 02-05-2008, 09:49 PM

Quote:

Originally Posted by natmoon

Also of note is that you should try to get the leds about 1-2" away from the tops of your plants

These are LED's - not CFL's! Where (and why) did anyone get the idea that LED's "want" to be that close? Nothing could be further from the truth; you would actually cause problems with the LED's that close to the leaves. Indevidual LED's put out a "narrow" (typically 20 degrees or so) beam - from only 1" or 2" away - that would give a "Polka-Dot" lighting effect that would cause the leaves to wrinkle and pucker up like a waffle. Most reputable manufacturers of LED grow lights say to keep the lights 12-18" away, to avoid the "Wrinkled Leaf Syndrom". The truth is - you need those extra few inches for the LED light to spread out and "overlap" each other, creating an evenly lighted area. The distance is also needed for the LED's of different wavelengths to evenly mix thier colors.

natmoon · #25 02-05-2008, 09:59 PM

Quote:

Originally Posted by T.H.Cammo

These are LED's - not CFL's! Where (and why) did anyone get the idea that LED's "want" to be that close? Nothing could be further from the truth; you would actually cause problems with the LED's that close to the leaves. Indevidual LED's put out a "narrow" (typically 20 degrees or so) beam - from only 1" or 2" away - that would give a "Polka-Dot" lighting effect that would cause the leaves to wrinkle and pucker up like a waffle. Most reputable manufacturers of LED grow lights say to keep the lights 12-18" away, to avoid the "Wrinkled Leaf Syndrom". The truth is - you need those extra few inches for the LED light to spread out and "overlap" each other, creating an evenly lighted area. The distance is also needed for the LED's of different wavelengths to evenly mix thier colors.

I was referring to the use of proper full spectrum wide angled leds.
The led boards that i designed used proper full spectrum leds.
Thanks for trying to use me to your own advantage though it is appreciated.

Anyone who tries to grow without full spectrum leds is wasting their time and money in my opinion.
You can also note that the "reputable manufacturer"

states 3"-12"away for full spectrum leds.

I would never pay ridiculous costs of "reputable manufacturers" led lamps.

Doesn't that seem like a lot of difference to you 3 or 12 inches hhmmm.
A massive difference in distance of 9 inches.
Hps manufacturers also state 18" for a hps,i have mine 8" away all though i wouldn't recommend doing this for a newb as they would probably ruin their plants

natmoon · #26 02-05-2008, 10:10 PM

Also of note i was only going to use 5 watt high powered 140 degree angle leds.
The little pimple leds are in my opinion only,total shite.

LED lighting

HATCH · #27 02-06-2008, 08:34 AM

If you are building your own led panel's, You need to add some Ultra violet, purple to blue-green in the 200nm to 270nm, To try and get some UVB, Useful Radiation (PUR).

They also make a 10mm super bright. They make a dual-colour led, Put a fader and mixing-board and you can blend your own arrays.

You can also mix some reptile lamps with your leds to achieve the UVB, Put them on a separate timer, they don't need to be on more than 6 to 8 hours a day.-- Also you want to turn the UVB lights off when you are in the grow room, The UVB is harmful to humans, but plants love the Active Radiation. Good Luck. Later

T.H.Cammo · #28 02-06-2008, 05:42 PM

I was referring to the use of proper full spectrum wide angled leds.
I certainly agree that wide angled LED's can be placed closer to plants, no doubt about it! But I am very curious about your use of "full spectrum" LED's. Please excuse my naivety - but what is the point (or benefit) of using full spectrum lighting, other than "It looks more natural"? Isn't using all of those wasted wavelengths exactly what we're trying to avoid - one of the main reasons for using LED's in the first place? The thing that drew me to LED grow lights in the first place was the fact that they produced only the wavelengths that the plant could use (PAR light). PAR light is a very small part of "full spectrum light", Maybe 20% - depending on what you read or who you believe. So it just seems to me that you are wasting a lot of electricty on unused wavelengths by using full spectrum LED's. Please enlighten me!

The led boards that i designed used proper full spectrum leds.
Thanks for trying to use me to your own advantage though it is appreciated.
Always glad to help out!

Anyone who tries to grow without full spectrum leds is wasting their time and money in my opinion.
You can also note that the "reputable manufacturer"

states 3"-12"away for full spectrum leds.
I'm not familiar with 3"-12" - I've, more often, heard 12"-18".

I would never pay ridiculous costs of "reputable manufacturers" led lamps.
If I had the expertise in designing LED systems; I wouldn't either!

Doesn't that seem like a lot of difference to you 3 or 12 inches hhmmm.
A massive difference in distance of 9 inches.
Yes! And maybe more importantly, it's 4 times the range in distance. 12"-18" is only 1 1/2 times the range.

Hps manufacturers also state 18" for a hps,i have mine 8" away all though i wouldn't recommend doing this for a newb as they would probably ruin their plants

That may be true; but heat isn't really the issue here - it's about a proper focal length for the little 5mm "pimples" that the origanal poster was using - I don't remember anything about him using wide angled LED's.

T.H.Cammo · #29 02-06-2008, 05:59 PM

Quote:

Originally Posted by HATCH

If you are building your own led panel's, You need to add some Ultra violet, purple to blue-green in the 200nm to 270nm, To try and get some UVB, Useful Radiation (PUR).

They also make a 10mm super bright. They make a dual-colour led, Put a fader and mixing-board and you can blend your own arrays.

You can also mix some reptile lamps with your leds to achieve the UVB, Put them on a separate timer, they don't need to be on more than 6 to 8 hours a day.-- Also you want to turn the UVB lights off when you are in the grow room, The UVB is harmful to humans, but plants love the Active Radiation. Good Luck. Later

Yes, that's true! Most of the UV-B LED's that I have seen (in the past) were rather expensive. Several $'s each, as opposed to a few cents each. But the reptile lights (CFL's) do a pretty good job from what I understand. But I think it is more than just UV-B that is is missing from LED grow lights.
I think some of the other pigments and hormones that require certain additional wavelengths of light have been ignored. I'm not a botinist, that's just my $.02 worth!

natmoon · #30 02-06-2008, 06:05 PM

Thats ok i understand.

Quote:

Full Spectrum Grow Lights
Item # F42XL
Uses powerful 1 watt chips. Superior appearance of plants. Provides red, blue, plus continuous full-spectrum enhancement. Designed to operate 3-12 inches from your plants. Wide angle beam for uniform coverage. Direct replacement for incandescent plant lights.

Full-Spectrum LEDGrowLight only £58 each
Covers 1-2 sq.ft
Full-Spectrum LEDGrowLight 10-pack £499.95
Covers 10-20 sq.ft.

The leds that i was talking about to someone who was not you

were 5 watt leds.
Even more powerful than this quoted company's price for its most expensive rigs.
The main reason to use full spectrum leds is because they don't cause horrible wrinkly leaf syndrome

You can buy ready made boards and the leds seperately and the transformer's etc. in kit form and just solder it all together yourself.
Doesn't really take much skill.

You can also add more leds at your leisure as well as time goes by.
The 5 watt full spectrum leds are bloody good shit.
If you add mini reflectors to these bulbs you can get even more out of them.

In several other threads about leds i have posted my designs and the bulbs i intended to use and why.
All though i am not an expert on wavelengths or distances i think you'll find eventually that i know what i am on about most of the time.

Having said all this though i decided ages ago that upon cost time and effort reasons the leds were not yet good enough or cheap enough to provide me with enough yield per pound that i spend and that it would be a bad business decision to use them