OP
LanceRiley
Contributor
OP:
Sounds rather extreme.
40m down, 20m in, just a bit of cave, single tank, while just starting to consider tech, much less completed cavern/cave
is rather outside the recommendations. I would consider more carefully where your tech friend is leading you. And how soon.
All the Scuba Pro is world wide and great and others are risky bit. SP makes good stuff. So do others.
While I'm commenting, SP makes a sealed turret MK19 that is not available in the US but might be where you are. Others with sealed turrets are Apeks, Deep6, DiveRite, Hog. You do not need sealed for cold where you are, but it keeps grit and salt out as well, simplifying maintenance worries.
Mk19? I havent heard of this. Did this come out already?