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Nitrox for shallow water artifact diving??

Discussion in 'Advanced Scuba' started by calabash digger, Jun 8, 2021.

  1. AfterDark

    AfterDark Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Rhode Island, USA
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    So what is it doing @ 25FSW on a 2hour dive? No much it would seem since I have never read of a case of DCS doing a 2hr @25FSW. Or any dive of any length of time at that depth. Have you?
     
    calabash digger likes this.
  2. AfterDark

    AfterDark Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Rhode Island, USA
    10,532
    7,440
    Your opinion. It may well do that. The history says it was developed to increase NDLs
     
  3. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
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    And it does that by reducing nitrogen uptake, which works at any depth.
     
    StefinSB and JoeFriday like this.
  4. ginti

    ginti DIR Practitioner

    # of Dives: 200 - 499
    Location: Lyon, France
    745
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    I am a bit confused... what's the purpose to lessen nitrogen uptake? As far as I understand, it is to extend NDL.

    What else?
     
    AfterDark likes this.
  5. AfterDark

    AfterDark Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Rhode Island, USA
    10,532
    7,440
    Right so on a 25FSW dive what NDL is being extended?
     
  6. AfterDark

    AfterDark Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Rhode Island, USA
    10,532
    7,440
    Can you prove that?
     
  7. JimBlay

    JimBlay Divin' Papaw ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: South Florida
    1,739
    3,005
    Like a few others on this thread I use nitrox on every dive. Several reasons why:
    1. I fill my tanks after a day of diving and don't know exactly where/when I will be using those tanks next. I keep EAN36 in all of my tanks given that the majority of my divers are in the 50-95 foot range and 36 makes a huge difference at those depths.
    2. I buy my nitrox fills in bulk in South FL (25-fill card) so the cost isn't bad.
    3. I believe I feel better after diving with Nitrox, even shallow. I have no empirical evidence and it may be a placebo effect. But I do believe I am typically less fatigued.
    I also believe that the Nitrox course is a great tool to have in your toolbelt even if you only occasionally use it. You will learn a great deal of useful information and will also be able to then utilize Nitrox when it brings value to your diving. Without the course it's a tool that is not available to you.
     
  8. ginti

    ginti DIR Practitioner

    # of Dives: 200 - 499
    Location: Lyon, France
    745
    447
    I am not arguing against your point.

    As far as I understand, there is, in reality, absorption of nitrogen at those shallow depths, but it's minimal and negligible for practical applications. In other words, we shouldn't consider it, as you are doing.

    @Duke Dive Medicine, could you clarify? (I hope it doesn't bother you the I am calling you so often in the last periods :D )
     
  9. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
    11,845
    9,768
    Yes
     
    DiveClimbRide and StefinSB like this.
  10. JimBlay

    JimBlay Divin' Papaw ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: South Florida
    1,739
    3,005
    The way I look at it if cost isn't an issue, less nitrogen is always a good thing. Nitrogen is the bane of our existence as divers and that is why most of us replace a portion of it with oxygen (recreational dives) and/or helium (technical depths). Even if I'm well within my NDL on a shallow dive, less nitrogen is always better than more nitrogen if all other factors aren't an issue (cost and availability).
     
    inquisit and johndiver999 like this.

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