regulator

Hello there, I am trying to sell a CO2 tank and regulator that my ex-roomate used for growing and left behind when he left the country. I am trying to identify the capacity of the CO2 tank and the type of regulator and other parts attached to it (if any), in order to find a fair price to sell...

Hi everybody, I'm aiming to rent out a 50# CO2 tank (20# tanks not available from my local welding supplier) to help my grow along - every bit of love and care helps! Right now I am searching for a solenoid CO2 tank regulator and a timer to regulate it. I'm assuming 300 ppm normal CO2 levels...