Uhm.. yes... thanks. I have a pretty solid understanding of volumes. And a youtube-video of "100 l/min" does not qualify as scientific argument for me. The rel

Uhm.. yes... thanks. I have a pretty solid understanding of volumes. And a youtube-video of "100 l/min" does not qualify as scientific argument for me. The relevant questions for me are: a) What's the actual active surface of the gills? b) Is the device actively sucking in water or does it rely on immersion alone? It is pretty easy to fork through thousands of liters per minute (ever cleaned a pool?). Yes, I am still very skeptical, but I do give people who put their name behind something at least the benefit of the doubt.