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rescuediver009 once bubbled...
You'll find that the piston first stage will only begin to give you a little resistance at about 110+ ft.
reubencahn once bubbled...
I currently have a Delta 3 as one of my second stages on the Oceanic diaphragm first. I do not like it. It is very difficult to get it to breathe easily without a bunch of positive pressure. The Delta 2 breathed more naturally.