recirculating loop on a skimmer

[IslandReefer]

Hey Steve,
Do I have it right, two mak4s, one recirc and one initial feed?
Do you think a dual (clean , then recirc clean) will remove DOC to a lower level than 2 separater skimmers(mono becketts)??

As you know I am also planning and building a beckett skimmer (all be it a mere mortal model) and have also thought of recirculation, gravity boost inflow etc.
Firstly if I ran the skimmer at the bottom of 5ft of head into the mak4, then to skimmer....do you,or anyone think the boost would be significant.
Also some designs attach the beckett air feed to the waste or collection cup giving a slightly pressurized air source and overflow prevention.
As with your water recirc.,does anyone think air recirc. would have any downside...upside is supposed to be quiet ,odor free and less prone to household air contaminents.
Just 2 cents more on beckett design
Great skimmer Steve...in the binford image