Check the listing for details. 20 pcs 6" inch CHOLLA Wood Cactus | ORGANIC, Untreated | Shrimp Aquarium CRAFTS!. Color: Gray, Condition: New. Listed at 19.97 USD. ORGANIC, UNTREATED & UNIQUE! (1) Box of 20 pieces of 6-inch New Mexico grown, all organic and untreated CHOLLA! So many purposes and possibilities with this unique natural wood – everything from arts and crafts to home décor to airplants to aquarium shrimp farms, pleco fish, reptile terrariums, bird perches, chinchilla/rabbit chews, dog chew sticks and MORE!! This cholla has been cleaned and all thorns removed. 20 pcs with clean cuts approximately 6” in length and between 5/8” to 1" in diameter. This cholla was hand selected and all brittle parts removed – these pieces are Solid and Strong. If you plan to use in an aquarium, you will need to wash and boil the cholla for at least 20 minutes prior to use. Collected only from dead cactus on family owned land in New Mexico. ** FREE USPS Ground Advantage Shipping!! **