Krazie4Acans
New member
does egg crate restrict light.
Yes, Your light is going in at angles and the thickness of the egg crate blocks that. Look at the wall to the right of your tank. See how the light makes a pyramid shape on the wall. That's the angle on the light trying to enter the top of the tank. Chances are some of the egg crate blocks all of the light entering the tank.
You can test the difference by removing them and taking a pic of the tank and comparing it to the one you already posted. You will probably see less light bounced back into the room as well.