boxtech Air Stones for Fish Tank - 3.2 Inch Aquarium Ultra-High Dissolved Oxygen Diffuser Bubbler, Nano Oxygen Aerator Stone for 30-70 Gallon Hydroponics and Aquarium (Air Pumps not Included)

At first they barely produce bubbles but after a day the air stone were saturated and produced the bubbles I needed. Used them for four days in my 190 bowfront freshwater aquarium after hurricane Beryl in Houston, TX. They worked well, saved all my fish. Excellent product!! I will always have these on had for power losses.

Honestly I was a little nervous due to some of the reviews, but this airstone is a beast. The bubbles are like a fine underwater mist. 100% would recommend. Please note that I do have a powerful air pump, because I have a 120 gallon tank. I am not sure how this would perform with a low flow pump, however with my pump, this airstone is fantastic! The water is so ultra oxygenated from the stone that bubbles form on the plants! Fishsticks gills barely move because breathing is so easy for him.

This product exceeded my expectations combined with a good quality pump and it's as good as it gets.

The charger runs fine. We’re very happy with them.

I love this airstone! The bubbles are very fine and it is pretty quiet.

It's been several months since I bought these and they're still working like a champ.

I understand it not coming with an air pump, lol. Product had no airline tubing, no suction cups, no valves, just the disc. That's it. It's becoming pretty common. Customers pay as described and things get pinched out. Update: They reached out, very polite. Sent out all accessories, pictured, that I did not receive in the first order. They went back for me so I'll return the favor. 5 out of 5!

The airpump I have isnt strong enough to make this work properly. I suspect you need a heavier duty pump to push air out of the surface of this bubbler. Its a rather wide circle of Air stone. Just have a beefy Airpump for this to work properly.

Esta piedra produce gran cantidas se burbujas pequeñas, incluso con bombas pequeñas. Redujo considerablemente el ruido que emitia comparado con mi piedra anterior (Una piedra cilindrica de una pulgada). Recomiendo esta piedra porque pienso que se oxigena mejor el agua y por ser muy silenciosa.

This produces so many bubbles I had to remove a structure because it kept floating up but other than that it’s been a great addition to the tank

Works perfectly. Already had an air pump with air flow adjustment so didn’t use the one that came with the air stone, which sit in fish tank for about an hour before turning on. I placed a check valve and put air pump above fish tank level to be sure of a non return flow in case of power outage. Happy with purchase.

Qualité prix c’est parfait

I'm preparing an aquarium and this is all I was missing; I tried it real quick, works very well. Heavy enough to stay at the bottom which is what I was worried about, but everything is fine 👍🏻