Selling as a set. No individual sales!! Is the stump resin or plastic? The rocks are heavy rocks. I forgot what kind of stone they are. Aquarium, fish tank, hideout, object, ornament Rocks, stone, shrimp, tropical fish, saltwater fish, reptiles, amphibians, layout, GEX, Suisaku, NISSO, Tetra, goods, freshwater fish, loach, turtle