I'm glad I was able to save you some cash! I actually did the same thing with my tank a couple years ago. My 55-gal tank's built-in lights were 12v LEDs, and I was just able to throw on a magic home controller to automate it
Now, I've got a 35 gallon hexagonal tank, and I've been trying to figure out lighting for that.
It looks like you're using an RGB controller—correct? But then, the channels are joined together to control one channel of LEDs?
I'm also trying to take a look at your fish there ... some type of a Cory catfish? And maybe tetras of some sort?