You can google Fire Extinguisher places and welding supplies places around Nanaimo. They should be able to help you with either buying or refilling a Co2 tank.
I was just going to say the paintball shop in Nanaimo fills co2 for really cheap. I know they sell tanks as well but I have no idea what kind of fixtures you'd need on the tank to make it work with the aquarium.
A forum community dedicated to aquarium owners and enthusiasts in British Columbia . Come join the discussion about breeding, health, behavior, housing, adopting, care, classifieds, and more!