I am planning to start a new 46 gallon planted tank in the next few weeks, and am slowly purchasing the pieces that I need. I found a Marineland C-220 canister filter on sale today and picked up a 5# CO2 tank, and have ordered a Milwaukee regulator\needle valve\electronic solenoid\bubble counter. I am planning to add a DIY PVC CO2 diffuser inline on the outflow side of my canister filter. What would you recommend I do for the output into my tank? Should I run the output through a spray bar below the surface of the water or just use the diffuser that came with my filter? Do you have other recommendations for this portion of my setup?