Ice Diving

[Chris H]

As I mentioned in a different recent post, Doug spends more time underwater than anyone else I know.  Poseidon regulators seem to hold up very well in cold conditions.  I used Poseidon for many years without issue.  I now use Scubapro MK25/G250V regulators and I've had them in a wide variety of conditions without issues.
Other friends are using Apeks also without issues.  The best thing you can do with whatever regs you are using, is have them tuned by somebody who uses them like you do.  This typically involves an IP setting at the lower end of the manufacturer's recommendations and perhaps some others tricks too.  Greg Such at Shipwreck Adventures can get your Apeks regs working well in tough conditions.

Your comfort level under the ice may have also contributed to your free flow.  Comfort just comes with diving.  One longer dive may have kept you warmer than a few short ones.

Staying warm is another issue.  I wear quality long underwear as a base layer and Weezle Extreme Plus insulation.  Also just added a heated vest.

Whatever you end up with, keep having fun and the rest of it will fall in line.

Chris