Question about paph light
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.

Question about paph light
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 05-12-2019, 01:41 PM
Steve_1111 Steve_1111 is offline
Jr. Member
 

Join Date: May 2019
Posts: 5
Question about paph light Male
Default Question about paph light

I have 4 small NBS paph. Maudiaes under two 28w full spectrum LEDs. They are about 6 or 7 inches from the lights. Should I move them?
Attached Thumbnails
Question about paph light-20190504_151026-jpg  
Reply With Quote
  #2  
Old 05-12-2019, 10:36 PM
King_of_orchid_growing:)'s Avatar
King_of_orchid_growing:) King_of_orchid_growing:) is offline
Senior Member
 

Join Date: Apr 2008
Zone: 9a
Location: Los Angeles, CA
Posts: 9,141
Default

What is the PAR and Kelvin temperature?
__________________
Philip
Reply With Quote
  #3  
Old 05-13-2019, 12:16 AM
wisdomseeker wisdomseeker is offline
Member
Question about paph light
 

Join Date: Feb 2018
Location: SE USA
Posts: 86
Question about paph light Male
Default

If you have recently started growing your phaps under LEDs, I would observe for overall-health of the plant... if you notice anything funky going on (from the light they are receiving ~ leaf burn, leaf discoloration, mottled foliage starts fading or starts to disappear), you could always move your plants or raise the height of your light to see if things start to improve.

I've been growing out a few phap hybrid seedlings (P. delenatii primarys) under LEDs for a couple of years, without problems. Some are about 7-8" under the lights, others are about 10" below the lights.



*Just an opinion for what it is worth - I think "quality" of light is more important than "quantity/intensity/or wattage consumed" from a light. Lumens and Lux are good indicator tools for brightness, especially with the human eye. PAR & PPF are even better light quality/light intensity (indicator tools) for plants. The downside... not everyone can afford and/or gain access to a PAR meter. I find myself using the 'observation tool' more than the light meter tools. So far, it has worked out pretty good.
__________________
"The glory of the garden lies in more than meets the eye" ~ Rudyard Kipling
Reply With Quote
  #4  
Old 05-13-2019, 01:37 AM
King_of_orchid_growing:)'s Avatar
King_of_orchid_growing:) King_of_orchid_growing:) is offline
Senior Member
 

Join Date: Apr 2008
Zone: 9a
Location: Los Angeles, CA
Posts: 9,141
Default

Sometimes the bulbs are pre-rated for PAR, you can look on the package for the info. Same goes for Kelvin temperature.

PAR is important to know. 28 W at a PAR of 24 is not as intense as 28 W at a PAR of 36. Knowing the PAR will help determine whether you actually need to get a bulb with higher PAR or move the plant further away from the light, (which was the question the OP had).

Knowing lumens output is important too. 28 W at 600 lumens is different from 28 W at 1,200 lumens. You don't really have to have a light meter, but if you had one great. You can check the roundabout amount of lumens output the bulb you have is producing by the rating on the box. Again, knowing this even if it is a rough estimate is important in figuring out if the plant should be moved.

Kelvin temperature is more useful than knowing that it is "full spectrum". The term "full spectrum" can mean anything. If the bulb is rated at 5,500 K it can be considered full spectrum, but so is a bulb rated at 7,200 K. However, those in the know will understand that the "full spectrum" 7,200 K bulb has a higher output of light in the blue and violet wavelength compared to the 5,500 K "full spectrum" bulb.

LED's have such a wide range of lighting options that just saying that it is 28 W and that it is "full spectrum", is not enough information to give the OP an informed answer.

Understanding light parameters outside of the wattage is vastly important.

Visually looking at light is not the best indicator of whether the light is adequate or not. Some lights just don't look that intense, but they are actually intense enough to do the job. This is why knowing the wattage, PAR rating, Kelvin temperature, and lumens/lux output that a bulb is rated for on the package is important information even if it is not precise.

I'm coming at this not just from the angle of growing plants, but I also used to have a coral reef tank where knowing light parameters are critical.
__________________
Philip

Last edited by King_of_orchid_growing:); 05-13-2019 at 01:45 AM..
Reply With Quote
  #5  
Old 05-13-2019, 02:19 AM
wisdomseeker wisdomseeker is offline
Member
Question about paph light
 

Join Date: Feb 2018
Location: SE USA
Posts: 86
Question about paph light Male
Default

Quote:
Originally Posted by King_of_orchid_growing:) View Post
LED's have such a wide range of lighting options that just saying that it is 28 W and that it is "full spectrum", is not enough information to give the OP an informed answer.

Understanding light parameters outside of the wattage is vastly important.
Could not agree with you more. Maybe the OP can elaborate more about their question, "Should I move them?"
__________________
"The glory of the garden lies in more than meets the eye" ~ Rudyard Kipling
Reply With Quote
  #6  
Old 05-13-2019, 06:57 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Location: Oak Island NC
Posts: 9,912
Question about paph light
Default

Even knowing little about the specifics, I suspect 2 x 28 watt, full-spectrum LEDs from only 6"-7" is likely WAY too much light for paphs.

I am currently growing a couple of neo x vanda crosses about 18" under a single 13W LED (cool white/warm white/red), and they are heavily pigmented, and one is spiking.
__________________
Ray Barkalow, Orchid Iconoclast
Want Better Plants? READ THIS
shop.firstrays.com

Free Shipping in the US! (see terms & conditions for details)
Reply With Quote
  #7  
Old 05-13-2019, 09:35 AM
King_of_orchid_growing:)'s Avatar
King_of_orchid_growing:) King_of_orchid_growing:) is offline
Senior Member
 

Join Date: Apr 2008
Zone: 9a
Location: Los Angeles, CA
Posts: 9,141
Default

I have a Paph that is about 1' and 3" away from a LED bulb that is rated at 36 W 30 PAR 6,000 K and produces approximately 2,900 lumens. The light is not shining directly on the Paph. The plant is approximately 10 - 15 degrees off from the center of the bulb. It is a little bit shaded. It has been growing there for about 5 months or so. Before that, it was grown in a more shaded area, and it did poorly.

Here it is if you wanted to know exactly what I have over my Paph:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Like I said before, I don't know enough about the parameters of a 28 W "full spectrum" bulb to say anything useful.

I can definitely tell you what my parameters are. You can compare.
__________________
Philip

Last edited by King_of_orchid_growing:); 05-13-2019 at 09:51 AM..
Reply With Quote
  #8  
Old 05-14-2019, 07:48 AM
camille1585's Avatar
camille1585 camille1585 is offline
Administrator
 

Join Date: Oct 2007
Location: middle of the Netherlands
Posts: 11,743
Default

While it does sound like it may be too much, a good approach for now is to keep a close eye on the plants. If you see changes in leaf color, or worst case, burns, then it's too much light.

How many hours are they turned on? What other plants do you grow/bloom under those lights?

I'm going to assume full spectrum is meant in the sense that it gives off a white light and is not those monochromatic blue/red types.
__________________
Camille

Completely orchid obsessed and loving every minute of it....

My Orchid Photos
Reply With Quote
Reply

Bookmarks

Tags
inches, lights, move, nbs, paph


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
question on light setup? Orchidbyte Growing Under Lights 5 02-25-2013 07:16 PM
Question regarding light meter reading (sun vs. flourescent) Paul Mc Beginner Discussion 2 05-15-2011 08:36 AM
Question on light for Phal's remy Beginner Discussion 13 08-05-2010 10:26 PM
Project 7 (Mystery Project) - Tentative Plant List cb977 Member Projects 2 08-11-2008 01:32 PM
My orchid list......... Bolero Orchid Lounge 9 05-22-2008 06:24 AM

All times are GMT -4. The time now is 10:15 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.