Complete Co2 setup?

What do I need to get my co2 system up and running? I have a full tank 2 1/2 foot tank of Co2. What else do I need?

Just a regulator. Remember to release the gas just above your canopy and seal the grow area,or you'll just be wasting your $,but directions will be included with your regulator. Good luck.

Regulators hose and meter get a dam meter u dnt want to be in a high co2 level can be a problem I know someone who straight passed out on his plants and was there till wife found him