Well worth what you paid, unless the driver is on it's last leg from being run at high temps for hrs on end like for growing weed. lol
The CV (constant voltage) drivers are great for the boards. CC(constant current) is great for the COB's.
Boards and COBs are manufactured differently, but will run on either.
Hey,
there's some kind of App for you all's cellphones, you can check what your spectrum looks like with the camera.
See what your light is actually giving to the canopy.
That way you can add what color spectrums your plant needs and dial in your spectrums for the different growth stages, even what your plant looks like overall.
I don't own a phone so I am shit out of luck on that one.
If you're serious about understanding your plant better than 90% of the growers, learn about the sun and atmospheric light.
Type the word "Haze" and see what comes up.
And the journey begins. lol