the styrofoam is 1" thick, if/when I do it a gain will probably go 3/8" or 5/8".
There are many better examples of styrofoam backgrounds out there. this was my second try using foam and was pretty easy, kind of fun, and turned out pretty good.
The negatives is the color ended up being a few shades to light, wish it was darker. It is hard to judge color until you actually have water and the light set up.
20L My Other Tank: OEBT Shrimp
40B Inlaws Tank: 2 goldfish
75 Main Tank w/ sump: 5 Glossolepis pseudoincisus, 5 Melanotaenia boesemani, 10 Melanotaenia praecox, 5 Melanotaenia lacustris, some cories, a bn pleco and rainbow fish fry