[Material: The bubble stone is made of high quality sintered stone and plastic and it is environmentally friendly and non-. It is reusable and for long time use. Creating Many Oxygenating Bubble: This round air bubble ring is designed to produce oxygenating bubbles in your aquarium making it an ideal accessory for aquatic enthusiasts. With its special design it can create many oxygenating bubbles that help to oxygenate the water more effectively creating a healthier environment for fish and other aquatic . Convenient to Use: Copper air inlet nozzle convenient to connect air tube simple to operate. It is easy to use simply connect airline and air pump to the bubble stone and place in the aquarium. A great way to properly aerate a home aquarium. Keep Your Fish Vivid and Lively: Our bubble stone can produce uniform bubble which would add dissolved oxygen rate always keep your fish vivid and lively. High quality air stone makes your fishes be more health. Pay Attention: To ensure proper functionality it is important to note that this product needs to be matched with an oxygen pump with a power rating of 20W or . This combination will enable the product to effectively oxygenate the water in your fish .]