Our Gold Vine natural wood pieces will become a focal point in your aquarium, terrarium or reptile enclosure. Low in tannin, fish safe, reptile & amphibian safe too. Suitable for terrariums & underwater aquascaping. Floats initially, will require pre-soaking or weighing down for a few weeks in the aquarium. Often grows a white biofilm when first placed in water, this is safe for fish. Please note, as this is a naturally occuring item, there will be some variations from the image.