Bonsai wood tree is made from natural driftwood and crafted into small landscape pieces and perfect for organic tank layouts, and it is environmental friendly, PH Value is around 6.5 – the bonsai trees contains tannic acid which helps soften and condition the water for healthy, natural balance ideal for fishes. Create a Stunning Theme – Safe for fish, shrimp, and turtles, combine our wood with rocks, moss, water and air plants to create beautiful aquarium, terrariums, mini landscapes and fairy gardens! Easy Care and Maintenance--just need to sinking into water for 5-7days before placing this Bonsai tree into aquarium fish tank.