Penn-Plax AS6Q 4-Pack Aqua Mist Air Stone Cylinder Aerator for Fish Tank | Easy to Install to Your Pump | Aerates Your Tank

Works well and is pretty powerful. Easy to use. Fair price for the product.

I was not sure what to expect from this, but thought for the price it's worth a try. I have been using these non-stop for the last month and am very happy with this product. No clogging so far. Lots of bubbles. The connector tip feels like it might be cheap plastic, but it's held up really well and I've moved them around. If you have an adjustable air pump, you can get lots of big bubbles with lots of air, or fast stream of lots of small bubbles with less air, or slow stream of bubbles with even less air.

got the job done

They work great, the green blends in with the plants, and the price is wonderful. I will be buying more.

As advertised

I love the price and the quality

These air stones are poor quality. The first one I used only had bubbles come out of one place at the top of the air stone. The other air stones had large bubbles come out of two or three spots. I will be looking for some better quality air stones moving forward.

These are perfect for any sponge filter. Has almost no resistance to the air input yet produces small bubbles.

My daughter order them and says they work fine she used them in the brine shrimp tank

basic air stone with larger than normal air bubble unless air flow is restricted . for the price worth a go

Bad quality, but what to expect with this price.