Air pump suggestion

[mike31154]

I can vouch for the Rena Air 400, using one on my air diffuser skimmer, although my system & skimmer are a tad smaller than yours. It has two outlets, both controllable, I run it wide open & it's quiet. Using a single large self made basswood air diffuser and I run the two lines into one with air check valves.

[belzebuth]

Thank you,
The skimmer is located in the access room behind the tank, but I would rather keep it as quiet as possible. The rena air 400 might be the way to go