Greg's 75g

[Reef Pilot]

I use lexan covers for all my tanks. So much simpler and more effective than egg crate or mesh. Covers can be in multiple pieces, doors, holes, or any way you want. Can't get any easier for access and maintenance. Very easy to bend, shape, drill and cut (just with tin snips, no saw required), and doesn't crack or warp like plexi.

And dramatically cuts down your evaporation, which is better for your house, too. Also great light transmission (different than plexi), and easy to keep clean (I just remove and wipe mine down about once a month, or longer).

I also have built in vented canopies, which is great for lighting.

Just another idea for your consideration...