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: Random Style. - Material: Wood - Size: about 19x18.5x13.5cm. - Made of real wood, it is safe 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.