Bold and Beautiful. Exotica™, the new freshwater rock line from CaribSea. Specially selected from around the world, these dramatic stones are the backdrop of the most spectacular freshwater aquascapes. All natural, no paints, dyes, or plastic coatings. Use with our Super Naturals™, Eco-Complete™, Instant Aquarium™, or Samurai Soil™ to create strikingly beautiful freshwater aquascapes.