Help with led for aquarium

[Reefer101]

Good day
I’m currently building a led fixture consisting of 3 watt leds. Below is an attached picture of the leds I have.
I will be using 30 to 33 leds.
I currently have a 12v 10amp power supply. Would I be using the power supply above?
I need help identifying what driver to use, on the website it states each led is 3.5v.

Please if someone could explain the basics to me as I’m a total noob to electronics, I even got someone to solder the LEDs for me.

 

[Reefer101]

I also have the essentials example heatsink, thermal pastes, 60 degree and 120 degree optics

 

[Kiwi]

Is the light spectrum of the LED's suitable for aquatic plants and fish?

 

[Bluejets]

You will get 3 leds per string using some kind of constant current driver @ around 850mA.

 

[danadak]

Nominal 3 leds / string = 10.5 V, so for nominal 12V power the constant current
supply needs to be compliant at 1.5V. Erode all these numbers, tolerances, T effects,
LED threshold...and its a challenge with such a low voltage. A cure is just 2 leds / string,
or raise power supply input V.

You strive for constant current to get matching string / diode brightness since
light output a strong f(current). Matching of course also affected by individual
LED matching.

You can do this as a linear or switch supply, each have their own advantages/
issues. Using LDOs (simple approach, linear) :

https://www.ti.com/lit/pdf/tidu922

Some ref material here : https://annas-archive.org/search?q=led+lighting

Manufacturers like ON, TI, ST, Infineon.....have lots of ap notes on the topic.

If you want to get into the weeds human eye response issues google
"human eye response led lighting"


Regards, Dana.