5 Pieces 5-6" Long Natural Cholla Wood for Aquarium Decoration by NilocG Aquatics NATURAL CHOLLA WOOD | Fertilizer and Pesticide Free | Completely safe for all our animal friends Great for Shrimp tanks, tying moss to, great for Hermit Crabs Small Shrimp and Fry will enjoy swimming in and around. Excellent hiding places for vulnerable babies. This Cholla wood has been cleaned and sustainably sourced. It is also sourced from a pesticide free location. Boiling prior to use will help increase rate at which the wood will sink