AQUANEAT Aquarium Air Stone 4x2 inch 2 Pack, Large Airstone, Aerator Bubble Diffuser, Air Pump Accessories for Aquariums, Hydroponic, Ponds and Fish Tanks

These air stones work great. Best I have ever purchased. Have been working for years. Highly recommend them.

I rebought two to replace two previous units in service for years. I shouldn't have bothered. The originals have not clogged.

These are great if you don’t put them too deep. They work best from 0-2 ft. Volume diminishes after that. I use these for my Koi tanks outside. I did have a couple of these airs tones that didn’t work very well from the start. I also have bought about 12 of these so far and over all I have had good luck with.

Awesome product. Excellent 👌 for growing 🪴 in hydroponics.

I bought them and was a little apprehensive, but, they are doing the job that I wanted done. Yes, I do recommend them, but, don't forget to soak them overnight before you put them in your aquarium. The price was right and I will buy them again, when I need them....

Nice volume of air

I have a 55 gallon tank and smaller air bubble disks make more bubbles. These are HUHE so measure carefully in smaller tanks. They only bubble from the top round area so I don't know why they are so huge. A 3" disk makes the same amount of bubbles. I planted around them to hide since they are so big.

Great stone heavy duty great bubbles need strong pump for good power! Would buy again