I just got a 20lb tank of CO2. I would like to run at least 3 tanks off it and have room for more in the future. I think I can do this with one regulator and a manifold with multiple lines coming out of it. Would I need a solenoid for each line or install one before the manifold? I am assuming that I need a needle valve and a bubble counter for each line. Brand new to pressurized CO2. I excited to see some results.