20 Gallon Vivarium Build

[killerecho]

I mentioned that I was working on a viv in my introduction, so here it is. Though I've done a number of simple setups for tree frogs before, this is the first one that goes beyond the bare necessities. My setups in the past were aesthetically modest; but they were easy and practical.

Quick background:
I've been out of the pet circle since 2005, when my White's tree frog died, presumably of old age. The 20 gallon tank it occupied was since decommissoned. Then 2 months ago one of my buddies asked me to look after his green anole for a few months. So I brought it in, pulled the tank out of retirement (it had become a storage bin of sorts - a rather shameful demise), ramshackled together some houseplants and tried to make the little bugger feel comfortable.

Then I poked around the internet for ideas on improving the cage environment. Long story short: 2 months of research later (a great portion of it from this forum and others like it), I was bitten hard by the vivarium bug and decided to make a serious project out of it.


The build:
My goals were simple:
Keep things as natural as possible - no fake plants, wood or rocks, only the real thing.
It must look good without appearing artificial.
Be a good environ for the animal and meet all its needs.

I didn't want to mess around with great stuff or large amounts of sealant/synthetic materials. I did want a water feature, not because the anole needed it but to keep the humidity up for the plants and as a possible holdover for when I get a frog in there eventually.

The tank is a 20 gallon high glass aquarium, 24" x 16" x 12". I didn't go for the tall conversion.

The setup was implemented over a period of a month and underwent several reconstructions, and will likely go through several more.

I have 1.5" of hydroton for the drainage layer; fiberglass mesh over it and for the substrate, I splurged on the Atlantic Botanical Garden mix sold by Josh's Frogs. This is mainly for the benefit of the plants. I also used T-Rex jungle bed (coco fiber) to fill in certain areas. The substrate layer is 2-3 inches thick.

Over the substrate I have a layer of 3-4 live moss varieties. Hardscape includes a 8" x 8" cork slab, various pieces of driftwood and branches. Plants include cuttings of peperomia glabella, wandering jew, variegated pothos and grape fern; 2 neoregelia broms and 4 tillandsias mounted on the cork. I will look to add more over time. The smaller neo brom is mounted on driftwood, while the larger one is planted in the substrate.

As for the water feature, the idea was to create a miniature waterfall using a small power head and rocks. Now, I didn't want the water area taking up a lot of space - just big enough so a full-grown White's tree frog can take a dip.

Originally, I was going to silicone a glass/acrylic divider to one side of the tank but I found a better solution in a glass Pyrex bowl, about 6 inches in diameter. The bowl was half buried in the substrate, resting on top of the mesh layer. Water changes would be carried out with a siphon. That part worked out well.

The waterfalI was more of a challenge and is still being perfected. Even at only 69gph the pump is just a tad too powerful for such a small waterhole. The first attempt ended up with water leaking out all over the tank. Second try less so, but still too much splashing. I know hydroton is designed to handle water but the sight of the drainage layer being partially flooded just rubs me the wrong way. So I'm still pondering what to do with the waterfall. It might involve more rocks, or using a piece of cork instead.

One of my biggest concerns right now is how wet to keep the substrate. I have springtails in there so hopefully mold will not be a problem. I just hope the moss doesn't lock in too much moisture.

That aside, the anole is taking to his surroundings well. He loves basking on top of the bark and surveying the terrain from the highest perch. He also sleeps there most of the time. There's a heating mat outside the glass behind the cork, which also serves as a hide. Dude is more voracious than he's ever been and gaining weight these days.

Changes ahead:
I mentioned the waterfall already. I want to move the cork slab higher, to make better use of space, and that may involve the use of sealant. I have the GE silicone II without Bioseal - please tell me it's safe to use when cured? More branches will be added - notably ones that run the length near the top. More plants, of course. I also want to try to grow some moss on the driftwood.

So there it is. I'd appreciate any comments, critiques or advice you might have.

Pics:
The first one was taken about 10 days ago, before the cork and waterfall. The next 2 were taken a couple days ago, after the moss was introduced but before the bromeliads arrived.