Check the listing for details. 6 Pieces 3" inch CHOLLA Wood Cactus | Organic, Untreated | Shrimp Aquarium NICE!. Color: Gray, Condition: New. Listed at 7.97 USD. Organic, Raw & Untreated!(6) pieces of 3-inch long 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 air plants to aquarium shrimp farms, pleco fish, reptiles, terrariums, bird perches, chinchilla/rabbit chews, dog chew sticks and more!!This cholla has been cleaned and all thorns removed. 6 Pieces with clean cuts exactly 3” in length and approximately 3/4” to 1-1/4” in diameter. This cholla was hand selected and all brittle parts removed – these pieces are Solid and Strong. If using 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.