There doesn't seem to be too much on here with lots of pics of bentonite backgrounds, so here's one I just got started on:
I siliconed pieces of cork bark and tree fern randomly on 2 sides of the tank and waited till there was no smell (MONTHS).
In a bucket I mixed more or less equal amounts of Coco Fiber, Peat Moss and Sphagnum Moss, moistened it, then slowly poured some of this stuff on top: http://www.dendroboard.com/forum/par...tml#post335565
Poured some water in on top and basically just squished it together/mixed it with my hand and slowly added more clay and water until I got the right consistency and color, pretty much a dark brown/gray paste.
Filled in behind the cork bark with Coco Fiber/Peat Moss/Sphagnum Moss/Coco Chips mix (which as also what the substrate is but I will be putting calcium clay mineral soil on top of it), then just grabbed handfuls of the paste and smushed it into the areas between the cork bark and tree fern, then just smoothed it out with my hand and fingers or created the textures I wanted, afterwards also pressed some Peat Moss/Sphagnum Moss into some areas just to see if it greens up or grows anything later.
So here are some pics with and without flash:
Used the new Feather Lite stuff from Black Jungle:
Mess at the edges will wipe it off after it dries: