Grey Rock Wall Aquarium Background Petbackdrops Rock - Etsy
Homemade terrarium / aquarium background. Took me about 350 hours. Carved sryrofoam, double cement layers. Apray painted with acrylic, and then treates with two layers of aquarium safe epoxy resin. : r/terrariums
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3D Aquarium Background Foam Fish Tank Rock Art Reptile Terrarium Vivarium | eBay