Hello
I have a Juwel Helia lux Spectrum 1200 60W.
I have a planted aquarium with community fish.
I have set the lighting differently for each day of the week.
The light settings vary each day but never at 80 to 100.
I am getting some black algae on the Amazon Sword leaves.
I have read that a kelvin output? 5000-6500k is good for plants and may help with the algae.
If so, how do I reach that target with this lighting system.
Thanks
Yea algae isn't sensitive to spectrum really.
But since I do like playing with spectrum I have a theory for you.
First calculations based on their published charts show a base Kelvin of err.. out of range.
You want to come closer to 6500-6600k and improve the color rendering just decrease the blue channel.
Most of your color temp is created from the white diodes. Depending on their temp is really what defines what you can adjust..Well WITHOUT a lot of light loss, ie dimming whites.
The RGB can make almost any K temp.
30/100/60 RGB % and no whites should be about 8000K and fair cri but a weak light.
Whites are like 85% of your photon output.
Tweaking just RGB
There are a LOT of assumptions here.
I'd suspect the whites are about 8000 k or so.
OK while writing this I came across this info:
Combination of 9.000 K and 6.500 K LEDs
So with whites at 100% and guessing on 6500 to 9000k ratio of 1:1 base K is like 7750K. It's not quite that simple though but close enough.
1:1 just makes manf easy.
All whites, all reds, no blue, green to taste "may" get you to 6500k-ish.
After that to go lower you need to dim whites.
Same as bold but w/ whites at 30% you should be around 5500k.
Play a bit and let me know what you think.
AGAIN though, this has nothing to do w/ algae.
Use the above and globally dim to say 60% during daylight schedule.. per above recommendations.