Driftwood is a fantastic and natural way to lower and buffer pH. It widely used in fish tanks, including some of our dwarf shrimp tanks. The pieces of driftwood add a natural beauty to any aquarium in which they are placed, and dwarf shrimp particularly love to graze for biofilm on the surfaces of the wood.Feature- Color: As Shown.- Material: Wood.- Size: about 15x1.5x1.5cm.- Made of real wood, it is nontoxic and environment.- There shape and size will be different from the picutre for there are no same branches in the world.- It is able to lower and buffer pH - perfect for lowering pH gently and naturally.- It needs to be removed excess tannins first before putting into the fish tank.- Great for planting plant buds and anchoring moss