First Grow journal - 320W - 3X3 - Organic

[LivingLight]

I will check all the paper tonight, thank you very much!

Actual strip: SI-B8V521560WW

No problem, internet fake scientist are doing a lot of intox nowadays, i try to help introducing real studies and arguments.
The ref of this strip you gave me is a 3000k, are you sure you got 3500k? you can check on the strip itself i think
I'm gonna do the simulation with the 3500k but you should check anyway ^^

[Hyakutak]

Yeah... Sorry,

SI-B8U521560WW

[LivingLight]

Yeah... Sorry,

SI-B8U521560WW

okay thx, and last thing i don't understand is the way u wired the red leds.
if i understand well your 5strips are wired in parallele on the HLG-320H-48
did you wire the red line in parallele with the white strips on the same driver?

[Hyakutak]

Yeah... Sorry,

SI-B8U521560WW

okay thx, and last thing i don't understand is the way u wired the red leds.
if i understand well your 5strips are wired in parallele on the HLG-320H-48
did you wire the red line in parallele with the white strips on the same driver?

Exactly, so they also get 48v.

[LivingLight]

Exactly, so they also get 48v.

Okay, it's a bit risky to do this kind of parallele because you are not sure the respective voltages of the series will match with the others. But it seems to works well for you ^^
I'm gonna do the simulation at 1000mA, as you are diming down the light i guess we can't target a specific intensity

[LivingLight]

Okay so running your driver at 1A, you approximately got this:



I think you should try with 14 far-red leds at the same current intensity. It results in a 7% far-red spectrum, with an equivalent phytochrome ratio to a 2700k 90CRI. You may even benefit from emerson effect, as 7% is not far from the optimal concerning emerson effect.
It's an approximation and the calculations on phytochromes are based on in-vitro ratio, but it's usefull to got an idea of what could be optimal.

Here some comparisons
i kept the power consumption and efficiency equal to your setup in order to compare only spectrums ofc:


Edit i messed with the power consumption of the 2700k on this simulation xD but anyway it's not changing the phytochromes rates

[Hyakutak]

Wow, incredible simulation! Thank you very much!

I think I will try to keep an easy wiring method (1 driver) & won't add a second mono led row.

If I follow your ratio, I should have 15x 660 / 10x730. At this number, they'll run under 2.25 volt so it should be ok. I didn't think that 660 wavelength was so high.

[LivingLight]

Wow, incredible simulation! Thank you very much!

I think I will try to keep an easy wiring method (1 driver) & won't add a second mono led row.

If I follow your ratio, I should have 15x 660 / 10x730. At this number, they'll run under 2.25 volt so it should be ok. I didn't think that 660 wavelength was so high.

Yes if your intensity is lower than 1000mA the far-red leds should run under 2.25v. Btw i'm not sure about how much intensity the far-red can handle.
ofc your solution seems easier regarding to your setup, when you'll be sure about what you gonna try i can do a new simulation

[Hyakutak]

Thank you very much!

I think I will go with a ratio of 13x 660 / 9x730.

If you can determine a better ratio with 20-23 total LEDs I'll implement it!

[LivingLight]

Thank you very much!

I think I will go with a ratio of 13x 660 / 9x730.

If you can determine a better ratio with 20-23 total LEDs I'll implement it!

I'm not sure, this setup gives me almost 53v at 1A for the mono serie while your strips should be running around 45v according to the datasheets.
The idea is to match the strip voltage, not the driver max voltage. It's actually weird that your setup is working xD. Do you got a multimeter?
I think i would try 12x660 / 8x730 :