Suggestions on cold water regs?

[tpscuba]

I would recommend a Sherwood Maximus or a Geninis GR2000 Sherwood easiest to maintain and adjust. One thing to remember if your air has high moisture in it you could possibly have a freeze up. When breathing the venturi effect of air passing through is about 17 degrees now add that to the existing temp ie; 35 above minius 17 temp = 18 degrees