This is custom built 18" cube vivarium designed specifically with poison-arrow frogs in mind. The vivarium is built into a Zoo-Med 18" cube tank and has been drilled for the Cascade 500 canister filter to filtrate and move the water throught the system. The tank comes with the canister filter, lighting system, and all live plants and mosses. The waterfall piece in the background is one of three that I have produced, all with excellent results. The live moss, will in less than 4 months, overtake the entire background and will hide the piece almost entirely.