I have used these in the past and are great for all fish! I used to love watching my fish go in and out of the air bubbles. Does them good too!

Pros: Great AIR FLOW

Cons: none

Love this for the tank.

Pros: great

Cons: none

Air stones just hook up to the filter tube and keep air circulating through the tank. This helps to keep the air easier to get to in the tank for the fish. It's also pretty cool to look at too.

Pros: cheap, easy to use

Cons: none

Air stones help keep water movement, which means less of a chance for algae to grow. They are also good for your fish because it gives them more oxygen. They also give the tank a nice touch.

Pros: Keeps water flowing

Cons: None

Well, I can't say my fish loved it, because they don't act different no matter what airstone I use or don't use. But this one was long lasting and I was pleased with the results.

Pros: Lasted longer than composite stones

Cons: Can't think of any