Micro Greenhouse with LUXEON XF-3535L LED Strips
- Thread starter robincnn
- Start date
robincnn
Well-Known Member
@PicklesRus I was going to go with the LUXEON XF-3535L LED Strips because they have a 3M tape on back and are easy to work with. No need or drilling holes.
I went with samsung strip in my latest project because i wanted to be able to swap out the strip with 5000K or 3000K or a different CRI and see how it impacts the color of leaves and growth.
The purple color could be due to stress or phosphorus deficiency.
Not sure about Philips output only 50ppfd @ 35w. How did you measure the 50ppfd @ 35w.
The PPF will decreases at distance increases. For my lamp i used a box to have a reference point of PPF measurement. Since i wanted to measure how much more light i am getting at the same reference point after i upgrade the led strip.
Here is some data with Samsung 560mm long strip SI-B8T341560WW at about 37 watts
Which one are you using. Where did you buy.
http://www.lighting.philips.com/pwc_li/main/shared/assets/downloads/pdf/horticulture/leaflets/cl-g-production_module-en.pdf
http://www.lighting.philips.com/main/products/horticulture/products.html
If the price is not to high these philips once should be good. Not sure what LED they use
LUXEON XF-3535L 1150mm strip can run at 157lm/watt @ 32 watts. I assume even more efficiency when drive current is less.
I went with samsung strip in my latest project because i wanted to be able to swap out the strip with 5000K or 3000K or a different CRI and see how it impacts the color of leaves and growth.
The purple color could be due to stress or phosphorus deficiency.
Not sure about Philips output only 50ppfd @ 35w. How did you measure the 50ppfd @ 35w.
The PPF will decreases at distance increases. For my lamp i used a box to have a reference point of PPF measurement. Since i wanted to measure how much more light i am getting at the same reference point after i upgrade the led strip.
Here is some data with Samsung 560mm long strip SI-B8T341560WW at about 37 watts
Which one are you using. Where did you buy.
http://www.lighting.philips.com/pwc_li/main/shared/assets/downloads/pdf/horticulture/leaflets/cl-g-production_module-en.pdf
http://www.lighting.philips.com/main/products/horticulture/products.html
If the price is not to high these philips once should be good. Not sure what LED they use
LUXEON XF-3535L 1150mm strip can run at 157lm/watt @ 32 watts. I assume even more efficiency when drive current is less.
PicklesRus
Well-Known Member
I really don't remember, I'll have to look it up but I think the philips numbers were coming from their own paperwork and recommendation of running the lights 18 inches (45cm) from the growing surface. Check out these two videos they show how they were designed to be run.
After watching these videos again I think that these lights weren't designed for penetration, i.e. there are 96 LEDs running at 23w (or 35w on my older model)... I believe they are designed for migrogreens, leafy greens, and seedlings. They have models with Far Red (I think that's IR) that is supposed to work for flowers, but again probably moreso growing small plants to be later sold in places like home depot so not full sized vegging.
I was hoping they would be good for a similar purpose to what you're doing, starting plants, small herbs and lettuce and first stage vegging.
https://www.rollitup.org/t/how-to-plot-ppf-chart-with-quantum-sensors-for-led-light-comparison.881113/#post-11844367
I will have to read this and see - there are so many variables with LED it really makes my head spin.
I didn't measure, I took it form the chart, and the ones I have are marked that they are 35w.
The chart shows the second gen, which I read in some literature that has the same output but lower watt (23w), so I assume mine are still 50 photon flux micromole/s at 35w.
When I get my killawat I'll plug it in and double check
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PicklesRus
Well-Known Member
Yes they are 140$cdn per bar. I found a greenhouse selling 80 of them for 100$ Each, used less than a year.
I guess they (the greenhouse) don't likem
OneHitDone
Well-Known Member
The Green Power Modules are pretty much a joke in my experience.
I know "The Lettuce People" was using them but when I inquired she told me her plants were being started under T5 and then moved to the LED. If they are so great why can they not get the plant up and rolling from seed without major stretching?
I purchased one to experiment before, installed at the "Shelf Height" as per the manual and here is what lettuce does under them (this was Deep Red/Blue)
Not to mention the headache you get from the shade of light coming out of that thing
I know "The Lettuce People" was using them but when I inquired she told me her plants were being started under T5 and then moved to the LED. If they are so great why can they not get the plant up and rolling from seed without major stretching?
I purchased one to experiment before, installed at the "Shelf Height" as per the manual and here is what lettuce does under them (this was Deep Red/Blue)
Not to mention the headache you get from the shade of light coming out of that thing
stardustsailor
Well-Known Member
I'm sorry for chimin' in like that ...
But I can't resist ...
Cheap ceiling light COB LED fixture ..( COB+alum Casing/heat sink +driver + alum reflector = $30 )
Hand made frame work ..
And here it is ...
My new kitchen -bar ,LED grow light for herbs ..
( Currently under it :
-Aloe barbadensis =growing just fine
-Pelargonium graveolens =growing just fine
-Petroselinum crispum =needs more light
-Artemisia dracunculus = ....just sowed )
COB dissipates 38 W at 960mA / 40 V
LES-only-has a diameter of about 60 mm !!! (bigger than a VERO 29 )
Other than that ,not a really efficient COB ...
But for the kitchen herbs ,is rather ok ...
Cheers.
But I can't resist ...
Cheap ceiling light COB LED fixture ..( COB+alum Casing/heat sink +driver + alum reflector = $30 )
Hand made frame work ..
And here it is ...
My new kitchen -bar ,LED grow light for herbs ..
( Currently under it :
-Aloe barbadensis =growing just fine
-Pelargonium graveolens =growing just fine
-Petroselinum crispum =needs more light
-Artemisia dracunculus = ....just sowed )
COB dissipates 38 W at 960mA / 40 V
LES-only-has a diameter of about 60 mm !!! (bigger than a VERO 29 )
Other than that ,not a really efficient COB ...
But for the kitchen herbs ,is rather ok ...
Cheers.
salmonetin
Well-Known Member
...eseeeeeee StarDustSailorrrr... 
...
Saludos y un abrazo
...Saludos y un abrazo
PicklesRus
Well-Known Member
Here's my lettuce at 11" mounting height . Just yesterday I raised them to 16" as I thought they weren't growing as tall as they could. I guess I'll find out (and sorry for hijacking your thread @robincnn)
Edit: I had a lot of emails and phone talk back and forth with one of the Greenpower reps from Philips, he helped me understand a lot of stuff, sent me par charts on demand and helped me figure out what I would need .
What it basically boiled down to was that one light by itself wasn't good enough, they were designed to be run additively side by side in large racks.
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robincnn
Well-Known Member
@stardustsailor Nice original design. I like the reflector and passive cooling. Feel free to post anything in my threads.
I have to keep my Kitchen Herb grow light mobile. Mobile to protect from my plants biggest predator my wife.
Aloe has been so useful i moved it into a 5 gallon pot. I bought some English lavender and some different types of mint. Looking for a something with strong good fragrance
Wife challenged me to upgrade under cabinet light. For next project going to retrofit a Meanwell APC-8-250 and 4000k 90 CRI Samsung SI-B9T051280WW 325 Lumens.
New LED under cabinet lights get expensive but retrofitting LED strip would just be $15 each and i get 4000K color and high CRI as well.
. I like the reflector and passive cooling. Feel free to post anything in my threads.I have to keep my Kitchen Herb grow light mobile. Mobile to protect from my plants biggest predator my wife.
Aloe has been so useful i moved it into a 5 gallon pot. I bought some English lavender and some different types of mint. Looking for a something with strong good fragrance
Wife challenged me to upgrade under cabinet light. For next project going to retrofit a Meanwell APC-8-250 and 4000k 90 CRI Samsung SI-B9T051280WW 325 Lumens.
New LED under cabinet lights get expensive but retrofitting LED strip would just be $15 each and i get 4000K color and high CRI as well.
robincnn
Well-Known Member
I tried a red blue lamp as under cabinet grow light in kitchen as its light was an eye sore. Never liked the plants under it either.
LUXEON XF-3535L and Samsung strips have been working great for me and the plants look great under it. Pretty efficient too.
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PicklesRus
Well-Known Member
Is this Constant Current?
LED strip is 18V 600mA right? This power supply is 18 V, 1.38 A
so how does that work? It doesn't match the LED perfectly does it?
robincnn
Well-Known Member
Both are 18V so works great. With constant voltage drivers Voltage needs to match not the current.
I have used LPV-35-36 36V driver with the longer 36V version of LUXEON XF-3535L
LUXEON XF-3535L are 18V,21V,36V common numbers except 21 and easy to find a constant voltage driver. With Samsung strips the voltage on high power once is not a round number and constant current driver might be choice.
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PicklesRus
Well-Known Member
Ah ok. I'm thinking of building a 4' strip to see how well it works.
OneHitDone
Well-Known Member
Any strip / driver part number ideas for making 4ft strips?
robincnn
Well-Known Member
20 watt side light. or on pots for light towards canopy from below
Power Supply: 24V $12. This can power 3 strips like this with this Splitter
http://www.ebay.com/itm/361306136292?_trksid=p2057872.m2749.l2649&ss
LED: Samsung 4000K 22 inches long or 560.00mm L and 18.00mm Wide $24.20
http://www.digikey.com/product-detail/en/0/1510-1121-ND
Strip is rated for 1.35amps. But it needs 24.7v . my driver puts only a little over 24 so running at 900amps
Heatsink USA 20 inches long 2 inch profile. stays cool. Wide Aluminum C channel may work too.
Power Supply: 24V $12. This can power 3 strips like this with this Splitter
http://www.ebay.com/itm/361306136292?_trksid=p2057872.m2749.l2649&ss
LED: Samsung 4000K 22 inches long or 560.00mm L and 18.00mm Wide $24.20
http://www.digikey.com/product-detail/en/0/1510-1121-ND
Strip is rated for 1.35amps. But it needs 24.7v . my driver puts only a little over 24 so running at 900amps
Heatsink USA 20 inches long 2 inch profile. stays cool. Wide Aluminum C channel may work too.
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weed-whacker
Well-Known Member
why is that heatsink in a glass of water?
robincnn
Well-Known Member
Humidity was too low during winter. Cannot fit a humidifier in there. So improvised a humidifer with 10-20watts resistor(100W rated) on heatsink with water in cup.
