paytertot
Aquarium Advice Addict
So I've just set up my very first DIY co2 bottle in my 55 gallon. I realize that one bottle isn't much for a large tank, but this is just a trial. My question is, is one HOB filter and one air stone enough oxygen in there? I had two air stones but I turned one off so I could tell later on if the co2 was working or not.