silent running
Contributor
I've seen two people get CO2 hits. Both took awhile to clear up after they bailed out. They both chewed through a LOT of gas. More so than they would have thought possible before they took the hit.
I think the record was the guy that used over 40 cubic feet of gas to go 200' out in a cave with high flow.
Yes, I understand that complete relief from hypercapnia is not quick, just trying to find out if your diver friend tried the BOV/OC before you gave him the BO regulator. The more details the better regarding hypercapnia events such these as the onset is so quick and hard to detect beforehand. It would be very helpful to know whether he tried the BOV and whether it helped or not...