LED Spectrum design

Hello, fellow growers!


I've been struggling to finish my LED lights for some time due to design failures and delivery times. Finally, all the diodes and drivers arrived. I'm currently revising the design as a whole, considering mounting them directly onto nice heatsinks (even though they're 1w diodes on stars). I'll make a nice thread about it as soon as I have more than packaged diodes and a failed prototype to show, but I wanted to ask your opinion on my spectrum choice:


130x 5000k white
35x 660 red
60x 630 red
18x 445 blue
27x 465 blue


I've been reading about the negative effects off excessive blue light and 660nm reds (hadn't done so when I ordered the diodes), but I still have much to learn about it. Do you think I'm planning on excessive light on those wavelengths? After reading a while I had the impression that I could have chosen better.
Thank you very much once more for all I've been able to learn on this forum.



Btw, all diodes have a 120 degree spread except for the 660nm reds, which have a viewing angle of 140 degrees.

270 LEDs - now that is a project! I balked at the idea of all that soldering (yawn) and cheated hehe. I am not working from experience but I to have been reading a lot here and there, your range looks pretty good, maybe a little heavy on the blue side with all those 5k whites but it's going to look spectacular when you are done. If you have a read of Stardustsailors thread (Astir project) you will see that he is rather against the 660nm reds BUT others disagree. Personally I went with warm whites instead in the hope that they will cover all bases.

I say test test test! If you make each band switchable then tou will win whatever

What kind of heat sink do you plan to use?

Looks like a decent spectrum, but the blue may be a bit much during flowering. I would expect it to veg amazingly though! If you had 10 less blues total, 3 less 445, and 7 less 465 (doesn't the 5000k peak near there on the blue side?) then the light would just be a full spectrum bad ass. Although you have to take into account the quality of the diodes. Industry standard white lights have come up significantly in recent years, because that is their largest market. Along with them, blues are always the highest efficiency, so you just generally need less. I don't use 1 watt diodes, but I would check to see if you can get spectral read outs and umol intensity of your diodes. Knowledge is power!
Sincerely,
ILovePlants

im just starting and very confused! i thought i could just buy a progrow 400 and it would have everything i needed in a 4x4 closet. is one 400 progrow not that. after i buy that i have 2 get more and change up all the colors and bulbs have me confused! please tell me what is needed to start new

1st tymegrower said:

im just starting and very confused! i thought i could just buy a progrow 400 and it would have everything i needed in a 4x4 closet. is one 400 progrow not that. after i buy that i have 2 get more and change up all the colors and bulbs have me confused! please tell me what is needed to start new

Click to expand...

Please read my thread before buying progrow, it's the warranty and service levels that are lacking.

https://www.rollitup.org/led-other-lighting/513134-pro-grow-warranty-repairs-performance.html

Sorry I can't give you answers but I can lead you down paths... Have you seen this: https://www.rollitup.org/led-other-lighting/562946-my-research-into-light-led.html Yes I know it is mine but that's what it's there for right? While you are at it have a long read of https://www.rollitup.org/led-other-lighting/563118-astir-grow-led-panel-project.html AND https://www.rollitup.org/led-other-lighting/547085-diy-modular-led-light.html

These are the threads that got me started! To be honest Stardust is way too educated for me and I struggle to keep up with his level of biology and Goud has been doing this for years, is very skilled with his hands, well researched and most importantly he tests EVERYTHING!

Good luck friend.

I hope that's not ALL going on one panel. The 5000K white covers 90%+ of the blue range, so I wouldn't bother using those blues but a few cool whites would be a good idea.

My personal experience using 1/8 660s during mid-flower was, the plants did not want to finish, so they (it) are off my list

WHITE POWER

Personally, I would put your res and blues on ebay and buy warm whites, cool whites and neutral whites, though your 5000K are neutral equivalent, so keep them

You have more than enough diodes for ~ 10 small panels

That's a TON of White light.... if it's for flowering I'd ditch about 70% of those cool whites for warm whites.... 2700-3000k max.... The cool whites will fill the blue spectrum for flowering on their own.

That being said my LED panel spectrum is as follows;

440-445nm x1
445-450nm x1
4260k x2
630-640nm x2
640-650nm x2
650-660nm x3
660-670nm x3
720-730nm x1

That's in each module, and there are 16 modules. It works awesomely!

I should mention it's an Area 51 panel

If you run them at @350 mA ,so you have in total 240 Watts...
In 16 panels of 15 Watts each...
I wonder ,what will happen if those were mostly white.....
???
How it will have worked ?
Hmmm....

Maybe ,We 'll found out ....
Who knows ,what the future will bring....
Anything is possible...

Download Ledengin Spectrum Tool...
Compare what you already have with a spectrum of ..
Lets say....
6 x Warms
5 x Neutrals
2 x cools
2 x reds..

I see quite a difference...
But if it works for you awesomely,then what more to say..

Is the blackdog worth it? how come no matter if u buy the smallest or biggest the veg/flower footprint doesnt increase shouldnt it grow/increase as u buy a bigger size.

Hey beef you seem to know a bit about LEDs. What's your opinion on the iris series from LED star. Found them on alibaba just want to know if the spectrum is a good one

Beefbisquit said:

That's a TON of White light.... if it's for flowering I'd ditch about 70% of those cool whites for warm whites.... 2700-3000k max.... The cool whites will fill the blue spectrum for flowering on their own.

That being said my LED panel spectrum is as follows;

440-445nm x1
445-450nm x1
4260k x2
630-640nm x2
640-650nm x2
650-660nm x3
660-670nm x3
720-730nm x1

That's in each module, and there are 16 modules. It works awesomely!

I should mention it's an Area 51 panel

Click to expand...

I like your setup. Would you recommend one light for both veg and flower or separate? Here are the led's I can purchase (since they are different from what you use could you maybe suggest which I should use?):

[FONT=宋体]850
730
660
630
600-610
595-600
520
460
450-455
440-445
410-420
400-410
380
W（3000-3500k）
w (4000-5000k)
W（6000-6500k）
W（6500-7000k）
W（7000-7500k）
W（7500-8000k）
W（8000-8500k）
W（10000-12000k）
W（12000-14000k）
W（16000-18000k）
W（18000-20000k）
W（20000-22000k)[/FONT]