Quote Originally Posted by UncleChester View Post
A couple other Backgrounds:

Cement: Quikrete "Quick Set Cement" mixed with Acrylic Fortifier and tinted with concrete pigments over carved styrofoam makes an indestructible background. Non-toxic acrylic craft paint also works to tint the cement as you're mixing it, but isn't supposed to be as colour fast (3 years and running with no problems in one of my vivariums though). This needs time to cure, especially if it's involved in a water feature as cement will raise the pH. Materials at any hardware store come in relatively large quantities making this very economical in the long run. Tile grout is another related option that I've never tried.

I couldn't find an exact "Acrylic Fortifier" on the label of anything at Menards, but this is described as an Acrylic bonding agent, just wanted to make sure its safe before I open and use it.
Concrete Bonding Additive - 1 Quart at Menards