Why LEDs make bad plant lights (facts + pics!)
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Why LEDs make bad plant lights (facts + pics!)
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #61  
Old 02-15-2012, 06:09 AM
RJSquirrel RJSquirrel is offline
Senior Member
 

Join Date: Apr 2010
Zone: 9b
Location: houston
Age: 61
Posts: 2,983
Default

they make light meters to measure any kind of light.the cheap light meters wont even measure fluorescent.you have to get a meter thats made for multiple lighting sources or to suit your own type of lighting specifically.

LEDS arent there yet. We have been installing them for over a year and ripping them right back out. Of course the ones that are working to specs are the expensive ones with 10w/10mm LEDS..Not the 5w or the 3W LEDS. The small wattage LEDS have a small Lens and therefore do not spread the light around..Very site specific.

Reply With Quote
  #62  
Old 09-16-2017, 10:05 AM
Mean & Green Mean & Green is offline
Jr. Member
 

Join Date: Sep 2017
Posts: 1
Why LEDs make bad plant lights (facts + pics!)
Default

It's 2017 now so does anyone have anything new they would like to share?
Reply With Quote
  #63  
Old 09-16-2017, 03:32 PM
Orchid Whisperer's Avatar
Orchid Whisperer Orchid Whisperer is offline
Senior Member
 

Join Date: Jul 2012
Zone: 7b
Posts: 3,064
Why LEDs make bad plant lights (facts + pics!) Male
Default

The original post is ancient by internet and LED development standards.

This is sort of like comparing Edison's original incandescent light bulb to the incandescent bulb of today, which produces much more light.

Today's LED lights produce much more light than back in 2008. I do not currently grow under LEDs, however, so it would be better for LED users to chime in on the details. Suffice to say, a lot has changed, and many growers do grow successfully under LED lights.
Reply With Quote
Post Thanks / Like - 3 Likes
Likes Dollythehun, jcec1, Nexogen liked this post
  #64  
Old 09-16-2017, 04:07 PM
jcec1 jcec1 is offline
Senior Member
 

Join Date: Jan 2014
Posts: 944
Why LEDs make bad plant lights (facts + pics!)
Default

Quote:
Originally Posted by Orchid Whisperer View Post
The original post is ancient by internet and LED development standards.

This is sort of like comparing Edison's original incandescent light bulb to the incandescent bulb of today, which produces much more light.

Today's LED lights produce much more light than back in 2008. I do not currently grow under LEDs, however, so it would be better for LED users to chime in on the details. Suffice to say, a lot has changed, and many growers do grow successfully under LED lights.
It's amazing to think how technology has changed since 2008.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Orchid Whisperer liked this post
  #65  
Old 09-17-2017, 02:44 AM
Subrosa's Avatar
Subrosa Subrosa is offline
Senior Member
 

Join Date: Jul 2013
Zone: 6b
Location: PA coal country
Posts: 2,995
Why LEDs make bad plant lights (facts + pics!) Male
Default

I flowered an almost 4' tall Cymbidium Little Black Sambo under leds last winter. And the fixture is an outdated unit intended for reef aquaria. Similar fixtures can be had for around $100. Leds are here.
__________________
Be who you are and say what you think. Those who matter don't mind and those who mind don't matter.
Reply With Quote
Post Thanks / Like - 1 Likes
Likes estación seca liked this post
  #66  
Old 09-17-2017, 05:49 AM
sesh sesh is offline
Jr. Member
 

Join Date: Aug 2009
Posts: 17
Why LEDs make bad plant lights (facts + pics!)
Default

Hi.
Ordered this from aliexpress.
<img src='https://i.imgur.com/QxSuuyq.png' />

Has anyone tried these kind of leds? With the driver built in, i mean.

Regards.

---------- Post added at 03:19 PM ---------- Previous post was at 03:18 PM ----------

Reply With Quote
  #67  
Old 09-17-2017, 08:55 AM
Ray's Avatar
Ray Ray is online now
Senior Member
 

Join Date: May 2005
Location: Oak Island NC
Posts: 11,372
Why LEDs make bad plant lights (facts + pics!) Male
Default

Have not time tried them, but it's certainly worth thinking about. I suspect they'd need on hell of a heat sink.
__________________
Ray Barkalow, Orchid Iconoclast
Want Better Plants? READ THIS
firstrays.com

Free Shipping in the US! (see terms & conditions for details)
Reply With Quote
  #68  
Old 09-17-2017, 12:30 PM
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 9,702
Why LEDs make bad plant lights (facts + pics!) Male
Default

Ray referenced a site earlier in this thread, sevengens. The owner stopped updating the site in 2012 and the original site is no longer available. However, the Internet Archive has the site.
LED Horticulture Resource Site

The technology has moved on but there is still a lot of good information there.
Reply With Quote
  #69  
Old 09-17-2017, 03:14 PM
sesh sesh is offline
Jr. Member
 

Join Date: Aug 2009
Posts: 17
Why LEDs make bad plant lights (facts + pics!)
Default

Quote:
Originally Posted by Ray View Post
Have not time tried them, but it's certainly worth thinking about. I suspect they'd need on hell of a heat sink.
Thanks Ray

I imagine so too, they're 50W each. I also think that the miniaturization itself would be adding some inefficiencies, which usually outputs as heat (not an expert). Probably why they have huge disclaimers with "DON'T USE WITHOUT HEAT-SINK" on their page.

IF the heat can be siphoned away, and the chips last a while, this would make urban gardening very easy!

Will update!

---------- Post added at 12:44 AM ---------- Previous post was at 12:27 AM ----------

Quote:
Originally Posted by estación seca View Post
Ray referenced a site earlier in this thread, sevengens. The owner stopped updating the site in 2012 and the original site is no longer available. However, the Internet Archive has the site.

The technology has moved on but there is still a lot of good information there.
Thanks, estación seca!

Lovely resource! I wish I had seen this website while it was active. Sadly many missing pages now
Reply With Quote
  #70  
Old 09-17-2017, 04:21 PM
Subrosa's Avatar
Subrosa Subrosa is offline
Senior Member
 

Join Date: Jul 2013
Zone: 6b
Location: PA coal country
Posts: 2,995
Why LEDs make bad plant lights (facts + pics!) Male
Default

I have a couple of 30 W units similar to that that I've yet to try out on plants. Product Review: Blue Moon Aquatics' P30 LED Pendant — Advanced Aquarist | Aquarist Magazine and Blog
The heat sink is indeed an impressive hunk of aluminum!
__________________
Be who you are and say what you think. Those who matter don't mind and those who mind don't matter.
Reply With Quote
Reply

Bookmarks

Tags
chlorophyll, leds, light, plants, section, pics, lights, plant, bad


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dendrobium aggreatum majus TOMD Dendrobium Alliance 6 05-28-2007 02:31 PM
Here's My Trade List for April 2007 llama llama duck Auto Generated Threads by Classified System 5 05-10-2007 02:26 PM

All times are GMT -4. The time now is 06:31 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.