As I am aiming for a Planted look in the Fluval edge I went and got a Fluval CO2 20g kit
After a little unboxing
These guys seem to be fine too.
Bring on the Planted Fluval Edge!
Planted Fluval Edge CO2 23L – Update
If you are interested in purchasing a Fluval Edge 23L yourself, check out the links below, Amazon usually great competitive prices.