wondering if there is something I can do to my custom light canopy to reduce spillover. I have made a backlight system behind the aquarium but the spillover is masking the effect and just looks like the light is blending together. In front of the aquarium it's not blinding by any means looking at or up to the aquarium, however the whole room seems lit with no lights on.
I have a 48" T5HO quad light 12" above a 75g and the canopy is 8" deep thinking that would reduce the amount of light spilling over, but nope. So is there reflective tape or something I can line the inside of the canopy to prevent this?