Fluval Evo light control

[Jason2000]

I am using the stock lighting on my fluval evo 13.5 and would like to incorporate a light controller for dawn/dusk effect. 

Is anyone using a controller with the evo stock light, and if so i'd love to know what they're using. 

I see that fluval itself does a 2 chanel LED lamp timer- does this actually have a gentle progressive dim function or does it dim the light in stages until off? 

Thanks in advance