Concern about Light spillover

[DjPhato]

Hi all, I was considering using the refugium area of the sump and have a light inside the cabinet but I am not sure which light should I use to avoid having the light hitting the rest of the equipment and creating a problem down the road.
I was considering AI prime 16 fuge light and see the sump in the picture (fiji cube 24).
Thanks!!!

 

[griss]

I’m using something similar to this. Small, powerful and inexpensive.