Review on JW Pet Company Aircore Sand Airstone Aquarium Accessory - 2-Inch by David Dortch

Very disappointed with this air stone. I soaked it overnight and put it in a 10 liter tank. At first the bubbles only came out at the very end where the air hose connects to the stone. After playing around and making sure it's perfectly level I now have 3 tiny bladder channels but still not enough to aerate the tank. Never had a problem with an airstone and we have them in 5 other tanks of different brands. Honestly, even for this price, it's not worth it. You can get a spherical one for 99 cents at the pet store, which works great.