suggest background for terrarium

[buffalo]

This is my progress so far, foam backing with a combination of coco husk and sphagnum moss background.
Also false bottom made from eggcrate and a small water pump. I drilled 3 holes one at the top for the pump wire, two on the sides for air. I will run small fan; have not decided how or where i will mount it. I could mount inside or outside using one of the drill holes.
Still to be done door with silicone hinge,
http://www.orchidboard.com/community...1&d=1443709769

[buffalo]

More progress . I hooked up a circulation fan , install water pump add some water to try out pump;it all works well so far. Just a few small thing to do before finish then to find where i will place it.

http://www.orchidboard.com/community...1&d=1444407627 http://www.orchidboard.com/community...1&d=1444407627

[buffalo]

I thought i check the orchid pretty good before putting them in the terrarium; looking for mealy bugs. These are newly purchased mini orchids. A couple days after i found a caterpillar who had munch on one of the leaves and had settle on the exposed root of the phal. It had good camouflage hard to see it as it match the roots and sphagnam moss .