Not sure if that will fit a fire extinguisher but you would need a similar regulator yes.
The one you linked appears to be a dual stage regulator with solenoid and precision needle valve. You may want a bubble counter but they are practically useless unless your aquarium is around 20 gallons or below.
You are correct with your list, you will need a complete regulator, a diffuser, some tubing, a one way check valve(very important) and a co2 canister.
The one you linked appears to be a dual stage regulator with solenoid and precision needle valve. You may want a bubble counter but they are practically useless unless your aquarium is around 20 gallons or below.
You are correct with your list, you will need a complete regulator, a diffuser, some tubing, a one way check valve(very important) and a co2 canister.