Possible 55 Gallon Planted Tank. What Co2 Though?

[Shovelman]

so im debating right now of either a large 55 gallon planted tank with co2, or utilizing my 20gallon as a reef tank... anyways im just mapping out the costs of both and such.... So lets say i acquired this 55 gallon with a sand substrate, appropriate t5 lighting and so forth, what co2 injection options would i be looking at? I know id be in the market of the pressurized co2 canisters but does anyone know of a specific kit that's nice or specific parts to buy separately and then put together? idk basically if you had to do co2 for a 55 gallon you had what would you do? Specific parts or anything you can tell me would be appreciated...