Use the dual membrane for the shallow water, winter AirStation, use the single membrane for the deep water AirStation. Run both during the summer as the single membrane one is not rated to handle the CFM from the compressor.
Like I said before, you will have to build a manifold to direct air to the 2 different AirStations.
Thanks! Do you have any preference on the diffuser style ? I noticed these two styles have significant different prices
