New DIY led project for a mixed veg/flowering 90-100w panel

glennorch

Active Member
Hi guys!

I'm new at this forum but researching on Led lighting I've found that this is the best resource for information and advice. I've seen impressive grows and lamps as well I must say! :clap:

I'm fairly new at indoor growing, my first grows used the old Evoled 70 v3 panels from Knna. Besides they weren't the best spectrum available, the plants were delayed on flowering and very spaced between nodes, I was very happy with the results (60w was barely noticeable on the bills and still got some quality stash with them) so I had sell them and will start building my own lamp this year, adapted to my own needs. But I'm not the best handyman here, so It's being a tough process to learn all this stuff about leds, spectrums, electronics and so on.

I have a 1square meter cabinet that I can use, but I will start with half of the surface or maybe something around 60x90cm so I don't need an amazing wattage and will be able to start experimenting. I want to keep things between 90w and 120w maximum, depending on led configurations and budget.

So far, I've seen that with efficient led lamps, you don't need that much wattage as the spectrums and results and usable photons from each bandwith are amazing even with lower powers. I must say that I mainly grow long flowering sativas between 12-16 weeks, sometimes in scrogs and LST. The main reason I started growing indoor was to grow the plants that I can't manage outdoors in the cold rainy autumn and to make controlled reproductions and selections as well. Although of course, I will use the lamp for some stash comercial crops as well or even medical indicas.

As for the panel, I'm planning to make a mixed spectrum lamp (usable both for vegetative and flowering stages, maybe with a veg/flower switch to change the spectrum a little bit, so I will use less power for vegetative phase and turn everything on for flowering stage, turbo boost on!). Passive refrigeration with alu pipes and for the spectrum and leds, i'm still researching but so far, i've thought about using red, deep red and blue spectrum + adding some whites with good efficiency to get more photons and fill the spectrum in the best possible way without any lacks.

The leds I will use after reading they're the best nowadays are:

-Reds: Xp-E cree
-Deep Red: Luxeon ES, as I couldn't find the better Olsons LH CP7p-3T4T to buy online yet.
-Blue: Luxeon Es or maybe XP-E otherwise (should those be Blue or Royal Blue?)
-White: I was planning to use XM-L2 or XP-G2 but after reading, maybe I will go with the cheaper XT-E R3. I wasn't sure on using cool or warm white but i've read great results with warm 3000k whites combining them with good blues.

The spectrum, I'm thinking in several options after reading and looking many great lamps and explanations on how 75% should be red, 15-20% blue, the amounts of Deep Red vs Red (knna used to say 50% each should be fine), which white temperature using, if Royal Blue or Blue and so on. Even some places say about other colors as Green, Infrared or Far red and a whole mess for my head! :P

I've seen a few interesting mixed spectrum panels with several combinations so far:

More deep red:
-3 red, 7 deep red, 5 white, 2 blue.
-2 red,4 deep red, 2 white, 1 blue.
-1 red, 3 deep red, 1 white, 1 blue.

More/equal red:
-3 red, 3 deep red, 2 white, 1 blue.
-7 red, 1 white, 1 blue.

No white:
-27 red, 2 far red and 4 blue (just 9, 3 ,2 working for growing mode and all of them at full power flowering). Used by the Ledgrow.eu lamp, the tests were quite ok and many people keeps the statement that red and blue are enough for cannabis if the spectrum is ok.


All of them seem to give good results although I'm sure there is a reason for everything and nowadays, there are lot's of experience led growers with stuff to say about the best spectrums. Which one you guys think it's the best one to go with? I've read about far red (720m) delaying flowering but at the same time, necessary. I've read about how some colors (660 deep red) make the plants to strech more (bad for wild sativas, good for indicas maybe). Some have more 660 deep red vs 625 red, others the opposite, I guess it would be for making them more compact or stretchy, right? Blue percentage seems to remain quite constant while whites vary as well, I guess it also depends on the relation between white and red amount, as warm white has more reds an cool white more blue, so it could need more red leds, right? It's a whole fucking world on its own! But that's the great thing, how you gotta research and become almost a light scientist and later a pro electrician, only then, you will be able to grow and improve your skills to make the most of the light and the plants!

Initially, I'm planning to run everything at 350-500mA to get the most of the chips and the passive cooling. Im still figuring out how to make everything for grow/flower mode swiching. Even which pcbs to use, if star pcbs or multiple pcbs... I guess using different chip brands and models will be messy for soldering everything but let's see, I have a friend who nows some electronics so hopefully he'll help me with it. Also I'm not sure about using a big sware/rectangular alu panel or long bars with several light spots on them, each one with a fraction of the whole spectrum. It seems a cool way but the most important thing I guess it's how the light is evenly spread all over the grow surface. I don't like the idea of having just an usable light spot to place a sog plant under it, as I grow sativas with crazy branches all over the place, that's why I decided to use scrogs most of the time.

Anyway, thanks to everyone for the time and any advice will be very welcome guys! Once I have everything cleared down, I will start ordering components. I can't wait to start building it! I just need your supervision and blessings to go with it! :wink:

Vibes to all! :weed:
 

Slipon

Well-Known Member
a lot of debate on this one, nothing is for sure here, make your research and go for what you believe in, tho one thing most agree on is that the 430-470nm and the 610-660nm spectrums is of most importance..

beside that there is also some debate on how white LEDs can help (support the single spectrum LEDs)
and even green, and of course also inferred (+700nm) I'm no geek when it comes to wave lenght, and its still new to me, but so fare I found that the 620-640 Red and the 660 fare red is some of the most important for flowering, and blue around 430 and 450 and 470 is some of the blue spectrum that peaks in MJ, the infered tricker flowering as fare as I understand

beside that I know that the blue light is absorbed more easy by the plant (might explain this wrong, sry English is not my mother tongue) but to make it short, you need a higher ratio of Red`s both Bc. the plant absorb the blue`s better but also since it will need them in flowering, a plant in Veg wont need more then a 3th of the light as a plant in flowering, and once in flowering it need a majority of red`s

if I should make one now, based on my knowledge for a full grow, I would mix it with 6500K ww and 430/450nm blue`s (Etc. 10ww and 5 of each of the blue`s)
and twice as many Red`s in 630/660nm (Etc. 20x630 and 20x660) but Im sure some can come up with a even better spectrum, I also read you could do it with only the WW and 660 alone ?

I consimized one for flowering to replace my HPS, look it up in my albums/pictures, spectrum is 2-1-11-1 ww-blue-red-IR
 

PSUAGRO.

Well-Known Member
....Knna was involved in the evo v3 led panel?..........this is news to me

Good luck on your build
 

glennorch

Active Member
Yeah in fact as far as I know (that's said many times in the spanish scene), he was the engineer behind the brand, he started all the led stuff in spanish forums, researching on his own and teaching most of us the basics of led lighting and later started to sell them. Never wondered how all his theories and ideas always applied and reflected on the Evo lamps? From the prototypes to the later designs?

Anyway after all the disaster with the first releases of the new Evoled V4 starlights (people were receiving panels in pieces to build by themselves at home, some faulty and there were amazing delayments in shippings after payments) and the dodgy stuff with the official distributor in Spain (many buyers claiming and the guy disappeared too and even closed the official Evoled forums right away), after all the online beef against them, he also left all the forums and Evoled was quite put down through the community among the led growers who never trusted again in them.

Back to the topic... I'm definitely using a combination with a higher deep red ratio against red to avoid excessive stretching.

I'm also thinking in using some purple leds instead of so many whites, I've read good comments on how they are the "new whites" to use to complement the red/blue spectre and maybe hyper red too. Or at least purchase a few to make experiments with the lamp. I'm reading through the Led Lighting section here!! :O

Vibes! ;)
 

PSUAGRO.

Well-Known Member
But the V3 didn't have any blue diodes in it!?I think. Yeah the V4 was so badly handled (i was really excited about their release) and it saddens me to hear from you that Knna got wrapped up in it, I hope it doesn't tarnish his legacy. We all learned so much from him!

Anyways yes back to topic........
 

glennorch

Active Member
I've been trying to start planning things today... but I've found myself with a design problem. I'm not sure about how to design the panel, either with 4-5 light spots (like the EVOleds) along the heat sink or in a bigger rectangular heat sink, arranged in a grid. The problem now is thinking about the coverage and the perfect spectral/color mix under the lamp. Multi Led PCBS will be useful but to get a more homogeneous arrangement maybe it's better just to get simple PCB stars.

I need to decide if I buy 80º leds or wider angle leds. Then, arrange them in the best way for the coverage, spectrum mixing and also cooling. Closer apart, means more cooling needed and far, means less homogeneous light.

I need to decide the mA I will use in the led strings as most probably, I will use at least 2 different led chips: Crees (color + white) and Oslons if not Luxeon, wich makes everything a mess. I'm probably going for:

-625nm Red XP-E or Oslon SSL.
-660nm Deep Red Oslon SSL or Luxeon ES
-425nm Royal Blue XP-E, Luxeon ES or Oslon SSL.
-3000 K Warm White XT-E or Oslon SSL.
-Maybe some others as Purple or Neutral/Cool White.

I need to arrange everything to get around 80-90W in a full spectrum to use in the máximum area I can (my closet is 1sq meter althought I can divide in two spaces to make experiments with lights). I've found that having a dimmer or switch to turn off some of them during vegetative grow is quite a mess, but still it could be an option.

I'm not sure about the drivers and the rest of the stuff. Do I need separate drivers for each group of leds running at the same mA (same color)?? Gotta leave the led data sheets for now and focus in the other components and how to choose them.

I've seen lot's of panels lately and I'm quite inspired !!!
Vibes.
 

salmone

Well-Known Member
Hey glennorch....

....Evoled 70 v3 panels from Knna.... mmmm...i dont think so...

...Knna was involved in the evo v3 led panel?..........this is news to me.... ....and for everyone Psuagro...

...Yeah in fact as far as I know (that's said many times in the spanish scene)

...please please please... glennorch....you said.... that's said many times in the spanish scene ....please give me links to post to forums spanish ...to talk about Kanna and evo...please....

,...he was the engineer behind the brand,.... maybe...or maybe totally not....tell me where the info is to talk about this...pleasee...

....he started all the led stuff in spanish forums, researching on his own and teaching most of us the basics of led lighting and later started to sell them.....
...kanna selling evos? ... where posts that talk about it?....¿in the Spanish Scene?...that spanish forums?...

..Evo behind .... I just saw a Gud (Distributor) and Cultivadorled (Factory) ...Gud is missing and your sites webs etc is tottally closed.... Cultivadorled ...stood up for the brand... manufactures became responsible for broken lamps in guarantees ...and are almost closed ... Factory (Cultivadorled) only atends to guarantees lamps...and is 90% closed...until today ...tomorrow who knows ...with the crisis so strong in Spain...

kanna I do not think it was the engineer of the brand evo ... maybe an free external consultant....

...good look with your lamp....
 

jubiare

Active Member
Yes he became a consultant he helped with the issues and the last evo they followed some of his guidance (never it came out though)
That's more like it
J.
 

salmone

Well-Known Member
hey jubiare....
....Yes he became a consultant he helped with the issues and the last evo they followed some of his guidance (never it came out though)
...
....please give me links to spanish forum or web ....talking these things....consultant maybe...but not confirmed on public...or not?...
 

jubiare

Active Member
On icmag there's a thread by habeeb where knna wrote some stuff in regards to helping solving issues with the guys at evo
No nothing official, from some stuff I chatted about with evo rep I assumed that the latest evo had to have followed some sort of knnabinoide directions
 

glennorch

Active Member
Hi guys, the official forum from Gud dissapeared, so not many info to revise now... some discussions and beef here: http://www.cannabiscafe.net/foros/showthread.php/286451-Evoled-V4-Starlight-Dark

Obvioulsy I'm just saying what others say in the forums, some people just talk about this but it's probably just guessings as many others in the community (some confirmed to be true, some others not); but after reading how EVO did things and all the mistery around it it could be true. Probably he was behind in one way or another. Who knows! I'm sorry if there was a misunderstanding here but english is not my first language, I didn't meant to start beef here about Evo and Knna, it was just an anecdote and everyone got really interested on it.

Anyway, let's go back to the topic please, as I registered here to look for advice to build my panels and not gossip! ;-)

Thanks!
 

SupraSPL

Well-Known Member
If you don't have a separate vegging room, you could "jump" a few of the reds in the string during vegging. You could put a switch on that jumper wire so it would be very easy to switch between vegging and flowering.

If you are in europe you have easier access to those Oslons. Ideal spectrum has the deep reds in 3T http://www.ideal-spectrum-led.com/ The deep reds are impressive but I would advise against the 630nm reds. I calculated the top bin (JU) at 31.7% @700mA 50c versus the XP-E red top bin (P3) which is 42.2% @700mA 50c.

Good luck with your build!
 

glennorch

Active Member
Hey SupraSPL... thanks for your advice!

Yeah In fact I was almost decided to buy Oslons, I've read somewhere that you can even use the same PCBS for XP-E and Oslon SSL, so I guess it will be the best solution. Cree for whites and red and Oslon SSL for the rest!

I'm trying to figure out now how to decide the best cooling option (passive aluminium + fans) and the surface and thickness needed per chip or chips to calculate the measures I will need...
 

glennorch

Active Member
By the way, I was checking the website from Ideal Leds and they have very good looking lamps although their spectrum 2red/2deep red/2warmwhite/1deepblue doesn't convice me. I think more deep red and maybe more white will be better. Are there any grows with their lamps around to check the performance? Their PCB multiple 7led stars look great too.

Thanks for the info on their %. Maybe I will use:

-XP-E Red
-XT-E Warm White
-Oslon SSL 80 Deep Red
-Oslon SSL 80 Deep Blue

The only tricky thing will be putting some 90º lens on the Crees to have the same coverage than Oslons... :(

Thanks!!!
 

glennorch

Active Member
Wow that's some strange spam!

Anyway, I've been playing with the spectrums. This are the graphics. Which option do you guys like the most so far?

Option 1 with more deep red against red. Im thinking in the opposite option, with more red than deep red too, I guess this is what will make a big difference in the plants performance, the red ratios:




Option 3 with some cool white to push the spectrum a little bit more, although it doesn't seem to look much nicer, just slighty more green/yellow light than with warm white only:


Thanks guys! bongsmilie
 
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