• Welcome to ScubaBoard


  1. Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

    Benefits of registering include

    • Ability to post and comment on topics and discussions.
    • A Free photo gallery to share your dive photos with the world.
    • You can make this box go away

    Joining is quick and easy. Login or Register now by clicking on the button

I Want A Bomb Proof Cold Water Reg!

Discussion in 'Regulators' started by cleung, Oct 25, 2020.

  1. cleung

    cleung Manta Ray

    # of Dives: 100 - 199
    Location: Mississauga, Canada
    764
    74
    28
    After this dive season in Canada, I'm going to retire my old Scubapro MK20/G500 reg (or might still use it for warm waters) since it froze on me at 8 degrees C water. So my next reg I want to get for Canadian waters should be bomb proof - okay I know no such thing but I want the best cold water reg I could get.

    So I narrowed my choices to the following three cold water regs since they were all US Navy tested I believe.

    Apeks MTX-RC
    Mares Abyss Navy ii
    Poseidon xStream

    If anyone here has experience with any of the above in cold water or better yet, had a chance to compare them in cold water, I would appreciate any feedback.
     
  2. Lostdiver71

    Lostdiver71 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Jupiter, Florida, United States
    274
    209
    43
    Poseidon xStream is the regulator used by military and scientific divers around the world. When tested in Antartica they were the only regulator with a 0% failure rate!
     
    Hoyden and Protondecay123 like this.
  3. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    17,543
    9,639
    113
    I'm partial to Poseidon, but the Argonaut Kraken is the only production regulator that is functionally impossible to freeze since the second stage is environmentally sealed as well as the first.
     
    Boston Breakwater likes this.
  4. cleung

    cleung Manta Ray

    # of Dives: 100 - 199
    Location: Mississauga, Canada
    764
    74
    28
    I won't be doing any ice diving but I want a reg that will not freeze in say 6 degrees to 10 degrees C which would be average water temperatures for a future BC trip and the absolute lowest I would dive up here in Ontario.
     
  5. BurhanMuntasser

    BurhanMuntasser Dive Charter

    # of Dives: I'm a Fish!
    Location: Nomad
    6,175
    2,340
    113
    The new SP MK19, Atomic M1 are top choices for the conditions you reference. I know people who use them in technical diving in your area including ice diving as well as in the great lakes. No issues with them at all. I have been checking with my friends. The SP MK19 is much newer model however. The M1 has been around for many years. My friends in the great lakes also use the SP MK25 EVO/S600 without issues.
     
  6. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    15,161
    16,905
    113
    You are going to make me post that dang picture...
     
    abnfrog, D_Fresh and Marie13 like this.
  7. Bigbella

    Bigbella ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: San Francisco
    929
    914
    93
    I'd go with the Poseidon Jetstream or XStream, for cold water. I have used them for decades -- Cyklons included -- and have never experienced, so much as a hitch with the regulators, even under freezing conditions -- whether with the more recent XStream first stages or the older models with their vodka-filled environmental caps.

    Keep in mind, though, that any regulator can freeze, if used improperly under the harshest conditions . . .
     
    Hoyden likes this.
  8. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
    10,407
    8,169
    113
    On an Antarctic trip we had 18 divers, each doing about 6 dives, each about 45-60 minutes long, and using probably 18 different kinds of regulators. Mine were DiveRite XTs, nothing special. All regs were detuned a bit for the trip. Nobody had a freeze up. Water temps were -2 to 2C.
     
    Bigbella likes this.
  9. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    15,161
    16,905
    113
    I have had nothing but positive experience diving my Poseidon XStream regs in Lake Erie and Ontario, Wonderful regs. They are just "different". I've also used my MK17/g250v in Erie, Huron, and Gilboa. They only let me down because they needed service.

    For ice diving, my choice is either my Kraken, or a PRAM. DH regs are fantastic in the cold as @tbone1004 said.

    Early on in my diving I dove an unpacked MK10/109 (or 156) on Erie without issues. I'd frequently see MK20/25 regs fail, but I think it was due to too hot of a tune. I also feel a metal air barrel is a minimum, and the more metal in the second stage the better.

    I still think diaphragm regs are a better choice for cold water.

    YMMV
     
  10. p_kos

    p_kos Nassau Grouper

    # of Dives: 200 - 499
    Location: Ontario
    135
    119
    43
    I’ve used Atomic M1s for years in near freezing temps without issues. Poseidon is another great choice. Older Apeks regs have been free-flow prone around here (Lake Ontario) but I hear good things about the MTX.
     
    BurhanMuntasser likes this.

Share This Page