Light spillage

[boisblancboy]

I’m sure I know the answer but figured I’d ask anyway.

Would light spillage from my refugium onto the display tank cause an issue?

I’m planning a remote fuge and was thinking about having it mounted on a shelf above the DT. While planning this out though I’m guessing the shelf should be big enough that any light spillage wouldn’t get to the DT as not to grow any excess algae in it?

I’m cramped for space so making everything come together problem free is a problem.

 

[KC2020]

Grow light or full spectrum for the Refugium ?