6040-F2525 A1 COB: Legit or cheap knockoff?

bluter said:
i run a mix of 3000k and 3500k and haven't seen the need for any deeper red. i could use something a little bluer for veg though.
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Didnt try it without, so I cant say if it's really better, but at least there are a few more Lumen and µMol/s ;)

For early veg I have a 50W Stripe, also with 98x LM301B but in 4500K.

waytoofaded said:
This is what holds me back from doing anything DIY, I'm at the mercy of MarsHydro, SpiderFarmer etc.

I would love to build some 450nm bars to play around with.
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DIY can be way more flexible such as already builded lamp, it also cost way less - but u need the skills, or at least u should know somebody who has and helps u with that.

Here u go : SYSTEM250 450nm Deep Blue Modul - CC Modul* | Plug&Grow Modul mit 12 Osram GD CSSPM1.14
 
It's good I see that the subject is relaunched I like to know that we can always build our lamp ourselves which is cheaper, so from what I understand I really have to take horticultural LEDs remains more than to see where I can order because even on the site that I was given above the leds remain quite expensive if I want to power a room of 150/150 it comes back to me almost at the same price as a lamp already made, otherwise I saw that the Samsung sell on Ali express but I don't know if they are the real Samsung or a counterfeit if you have another website for people living in Europe I am a taker, otherwise how if people build their own lamp I would like to know your configuration
 
I use 6x LM301B Strips with 98x LED's each - they are driven by 2x Meanwell driver where u can adjust the current for more or less Watts. And as I already wrote 2x strips with Osram deep reds LED's which have also 2x meanwell driver, but without any adjustment.

The rig is also selfmade with some aluminium profiles

This setup is in my 1m x 1m tent (2m height)

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Me for a 1.5m/1.5m room I think I'm making a configuration like that

1000 LEDs LM301B 6500K

300 to 400 red LEDs 660 nm

100 to 200 blue LEDs 450-460 nm

50 to 100 UV-A LEDs
 
The reason why I suggested including a relatively large amount of blue LEDs (450-460 nm) in the configuration for a growing chamber is that blue light plays a crucial role in regulating the vegetative growth of plants, especially during the vegetative development phase (when the plants are in full growth but before flowering).

Blue light (450-460 nm) promotes several important processes:

Stem lengthening and leaf development: Blue light stimulates phytochromes and cryptochromes in plants, which promotes stem growth and leaf production, giving plants a more robust structure and a better ability to capture light.

Photosynthesis control: Blue light is very effective for photosynthesis, allowing plants to produce more energy for their growth.

Reduction of thresting: If the plant does not receive enough blue light, it can fade (excessive lengthening of the stems), which is not ideal for healthy growth.
 
Jawbraker said:
The reason why I suggested including a relatively large amount of blue LEDs (450-460 nm) in the configuration for a growing chamber is that blue light plays a crucial role in regulating the vegetative growth of plants, especially during the vegetative development phase (when the plants are in full growth but before flowering).

Blue light (450-460 nm) promotes several important processes:

Stem lengthening and leaf development: Blue light stimulates phytochromes and cryptochromes in plants, which promotes stem growth and leaf production, giving plants a more robust structure and a better ability to capture light.

Photosynthesis control: Blue light is very effective for photosynthesis, allowing plants to produce more energy for their growth.

Reduction of thresting: If the plant does not receive enough blue light, it can fade (excessive lengthening of the stems), which is not ideal for healthy growth.
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That all might be correct, but just to blast blue light wont help to get a better result.

Also u wrote that u wanna use 6500K Samsung LED's, which also have an insane amount of blue in the spectrum.

U can't replicate the sun....and it's also not necessary.

For example - SANlight, a big Growlamp Company. they have a light for 1.5x1.5m, will cost ~1400€ and here is the spectrum of it:

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and this are the spectra of the Samsung LM301B, beginning with 2200K in the top left corner to 5000K in the lower right corner.

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So I guess u may have to think about what u are planing to do.
 
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