Features: Sintered by high temperature, the air stone is strong and durable. Create oxygen to keep the plants healthy. Fishes become more energetic with plenty of oxygen. Add to the aesthetic of the aquarium when it creates micro bubbles. Washable for long time using. For fish tank, aquarium, ponds, etc. Specifications: Material: Natural sand Item Size: 14 * 10.6 * 2cm Item Weight: 161g Package Information: Package Size: 12 * 12 * 3cm / 4.72 * 4.72 * 1.18in Package Weight: 181g Note: Soak the product into water for 15 minutes before using. Change a higher power air pump if there’s no bubble in some areas. Package List: 1 * Bubble Stone
