5 Inch Heavy Duty Airstone Disc – 127mm Bubble Diffuser For Koi Ponds & Large Aquariums

Give your fish the oxygen they need with this heavy-duty 5-inch airstone disc! Perfect for koi ponds, large aquariums, or even hydroponics, it creates a fine stream of micro-bubbles that really boost water quality and circulation. Made from durable sintered stone, it resists clogging and is easy to clean. It comes with a dual nipple fitting (fits both 3/16” and 5/16” air tubing), so you can connect it to most air pumps without hassle. Safe for freshwater or saltwater setups. If you want clearer water, happier fish, and healthier plants, adding a quality airstone like this is a smart move. Just hook it up and watch it work!