How do you stop refugium light bleed.

[MoshJosh]

Starting work on my next project and am starting to think about the sump/refugium. One thing that I, and my wife, dislike about my current setup is that my sump lights up the room. My new setup will have the sump in the cabinet, however, there are some pretty big cracks between the cabinet and the cabinet door. . . how would you stop light bleed?

 

[Lavey29]

Starting work on my next project and am starting to think about the sump/refugium. One thing that I, and my wife, dislike about my current setup is that my sump lights up the room. My new setup will have the sump in the cabinet, however, there are some pretty big cracks between the cabinet and the cabinet door. . . how would you stop light bleed?

I use a Neptune's gro light so it focuses close to the water.