Don't want to use egg crate blocks to much light, rather not use glass, I've been looking into mesh and netting solutions but having a hard time finding anything online that doesn't require buying 500sq ft of it.
I'm running stainless window screen from a DIY kit I picked up at my local HD. It has virtually no effect on light passing through it and does not sag at all from the light. The other half of my tank I used a piece of acrylic cut to size, it works well to cut down on evaporation, but it does sag and has to be flipped over weekly to prevent it front sagging too much.HD didn't have exactly what I was looking for, they had normal window screening which I'm not sure what kind of effect it would have on the lighting plus wasn't sure if that would sag from my lighting being a few inches away.
Blue thanks thats pretty much exactly what I was looking for, I can pick up some more rubble while I'm at it too.