
I replaced my shower head with an Oxygenics showerhead also...but eventually switched back to the OEM head. I often dry camp, and found that the Oxygenics head required more water to work as effectively as the OEM unit. It does mix air with the water but I found that I was using more water to rinse off. I experimented with a rubber mat that blocked the floor drain. I definitely had more water around my ankles than with the OEM head. It might be anecdotal but my wife also agreed with my findings. I am not sure why we seem to use less water with the OEM head.
By the way...when we first got our Pod, both the shower head and sink aerator were almost totally clogged with plastic 'filings' . I used compressed air to clean out both heads and ran a few gallons of water through the piping (and water heater) to flush out any additional debris.