I have a 55gal planted aquarium I just started getting into planted aquariums so I’m really confused with this whole thing...I don’t know when to turn on and off my co2? I’m using a 20oz paintball tank as my co2 canister cause it was much cheaper than buying a giant co2 thing and within about a week or two I ran out of co2 so I’m pretty sure I was running it wayyyy to long it ran it 24/7 and I don’t think I’m supposed to go through that canister that quickly...so I don’t know how much co2 I need for my 55gal tank and how to inject it properly...any suggestions??