CO2 system....

[ahollland92690]

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)

 

[jeremyblevins]

it only allows gases to flow one way through it so you place it inline on your co2 tubing and it keeps the co2 in your line when you remove your yeast container and siphoning your water out. Just make sure the arrow is going towards the aquarium so the co2 can flow in.