These are amazing natural leaves for water ph value changing, which is safe and environmentally friendly. It caan help improve the water quality and provide your fish animal great living atnosphere. It can prevent and . Feature - ColorDark Brown - Material: Leaves. - Size: Approx. 26x20x0.2cm. - Keeping bettas active and healthy by putting a leaf in 10 to 15 liters of water can help extend the time of water changing. - The leaves can be floated on the surface of the tank to increase the mating frequency of bettas. - Accelerate the of fins or body injuries. Put 1 leaf in 1L water, 28 degrees water temperature, avoid direct sunlight, feed live red worm. It will quickly return to the fins to restore health in about two weeks. - The leaves can be applied to both the bettas and the breeding of the short bream. Its main function is to reduce acidity and increase water color. - It is safe and healthy for your animal. Package list: 10 x