Artificial Cypress Knees – Realistic Replicas for Aquariums & Terrariums Material: Polyurethane Polymer (Fish- & Creature-Safe) Introduce the natural beauty of cypress swamps into your habitat with our Artificial Cypress Knees, created using molds taken directly from multiple real wood pieces to capture authentic texture, grain, and natural variation. These highly detailed replicas provide the look of genuine cypress wood without the problems of rot, tannins, or decay. Each piece is cast from a durable polyurethane polymer, a long-lasting, lightweight material that is completely safe for fish, reptiles, amphibians, and invertebrates. Whether submerged in an aquarium or placed in a terrarium or paludarium, these cypress knees maintain their shape, detail, and coloration with minimal maintenance. Available Sizes: Small: 4.5″ × 2.5″ × 11″ Medium: 7.5″ × 3.5″ × 9.5″ Large: 4.5″ × 5″ × 14.5″ Their vertical form adds natural height and structure, making them perfect for swamp-themed aquascapes, riverbank displays, bayou environments, or any setup that needs a striking, nature-inspired focal point. Care Note: Clean using non-abrasive methods. Avoid bleach to preserve surface finish and coloration.