1.5 usage average usage over a dive for me.
My buddy doesnt seem to metabolise hardly any oxygen, the get always ends up with more left than me. I dont think he's human. I set up my old Dolphin on him and it ended up 0.6L/min on the valve after an hour in the wet stuff.
I guess I'll just have to face it, drinking Newcy brown, being a fat tw@t and bar fighting is not the healthy option.

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