Luga Horticulture cobs and strips

I came across these cobs on LED-TECH DE.
Bloom cob and veg cob.

The veg cob looks a better option to flower with, to me.


https://www.vossloh-schwabe.com/en/home/products/led-modules/horticulture/
They also do strips.
They have a low cri - 57 and are 1800K - 2600K ish
Are they efficient enough?
Are they any use for growing?
I can get nearly 5 x citizen 1212s for the cost of 2 luga cobs though....
Any thoughts ?

Luga spectrum looks like nearly the same as from the citi horticulture cobs....the stripes are described with 2,4 μmol/J efficiency at 700ma/33.4V..... do they have other "bloom" spectrum.. "The slightly pink-coloured full spectrum light"? .....because the shown cob looks really pink to me

The pinkish 2600°k HB strip looks interesting for flowering with it's increased far-red output and red peak @650nm.
Any info about strips prices?

Randomblame said:

The pinkish 2600°k HB strip looks interesting for flowering with it's increased far-red output and red peak @650nm.
Any info about strips prices?

Click to expand...

I sent them an email earlier asking where can they be purchased, in small amounts, for testing purposes.

I'm a bit confused by the SPDs.
Looks like they maybe got the bloom and Leaf the wrong way round....?

Moflow said:

I'm a bit confused by the SPDs.
Looks like they maybe got the bloom and Leaf the wrong way round....?

Click to expand...

That's what I was thinking. I'd much rather flower with that veg spectrum.

Moflow said:

I sent them an email earlier asking where can they be purchased, in small amounts, for testing purposes.

Click to expand...

Ah, great!
COB's and stripes seem to have the same data because the strip is just a long COB and 2.4μmol/J is not bad at all. 2.6μMol/J should be possible at 350mA. But if they are just as expensive as the COB's, huh nope! 25€ or 30$ is too much for such an 280mm strip.

schnurzel said:

Luga spectrum looks like nearly the same as from the citi horticulture cobs....the stripes are described with 2,4 μmol/J efficiency at 700ma/33.4V..... do they have other "bloom" spectrum.. "The slightly pink-coloured full spectrum light"? .....because the shown cob looks really pink to me

Click to expand...

I checked the SPD on the citizens and they have a lower red peak it seems.
2200k

If you read the datasheet, the bloom COB's are optimized for max. photosyntesis. Seems they have not heard of the emerson effect and how useful a small amount far-red can be. But to be fair, they are focused on greenhouses as supplemental lights, not for our purposes.
The pinkish spectrum of the veg COB's looks somewhat similar to the Luxeon SMD3014 Fresh-Focus diodes just with a bit more green.