co2

[wesleydnunder]

...If you have canister filter I highly suggest building your own reactor. I have a section of my Guide where I show how to build a reactor.

And it's a great reactor. I built one for my 125 gal last year. What was the name of the CO2 tubing I got from you, Rex? Tygon? The black stuff.

 

[Rex Grigg]

It's polyurethane.