Enhance your aquarium's oxygen levels with our bubble diffuser stones. These air stones are designed to release fine bubbles, ensuring efficient aeration for your fish tank. Made from durable materials, they are for creating a healthy environment for your aquatic pets. Ideal for both freshwater and saltwater tanks. Features -Color:Black -Material:Sandstone -Size:4.00X1.50X1.50cm/1.57X0.59X0.59in -Improved water quality: enhances water conditions by increasing oxygen levels, creating a healthier environment for your aquatic pets. for maintaining a fish tank -Precision bubble distribution: fine bubbles evenly across the tank, ensuring optimal oxygen dispersion and preventing areas of oxygen deficiency or excess -Universal compatibility: designed to fit various aquarium sizes, from small decorative tanks to largescale aquariums, making installation effortless and -Durable construction: made from materials that resist wear and tear, ensuring performance and reducing the need for frequent replacements -Efficient oxygen transfer: works seamlessly with air pumps to maximize oxygen , keeping your water fresh and your fish thriving Package list: 30 tank aerobic stones