ahollland92690
Aquarium Advice Activist
You can get one at any pet store, or even wal-mart. Here is a link to onehttp://www.bigalsonline.com/BigAlsUS/ctl3684/cp18285/si1378908/cl0/pennplaxcheckvalveairfilterplastic
so do i attach this to the tubing & it works like an air stone and forget about the little ramp/ rack part where the bubbles move up and down...or what? lol (prob a dumb question lol)