I use these in my fish tank,and they are really cool. I like to watch my fish swim in and out of all the bubbles. It's their own little bubble bath.

Pros: Easy to install

Cons: none

I used these,but I like the blue ones better.These seem to collect alegre fast and it is hard to clean off the wood.Otherwise they work great .

Pros: looks nice

Cons: hard to clean

I have aways loved watching the bubbles, and the fish swimming through them, but it gets clogged with algae and it is sometimes hard to clean.

Pros: It is fun to watch

Cons: It gets clogged quickly

These stones works great and look great. I cover mine with pebbbles and it looks awsome when the bubbles are coming up out of the stones.

Pros: Keeps lots of oxygen in the water

Cons: none

When I use the round green air bubblers they tend to clog up. Maybe its the square shape but these seem to keep bubbling alot longer

Pros: doesnt clog

Cons: none