From reading what I can on this awesome forum an inline heater and inline DIY CO2 reactor is the way to go. Starting the setup on 72g tank with Eheim 2217 and Catalina Solar T5 4X54, trying to keep it quiet. I know (I think I know) that the inline heater and inline DIY CO2 reactor goes on the output side of the canister. Which should be first on the output side?