Nitrox for shallow water artifact diving??

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At 33 feet a diver's body is offgassing, if they came up from deeper than 33 feet. It is ongassing if they just came down from 20 feet.

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?
 
Nitrox is used to lessen nitrogen uptake (compared to air) at ANY depth.

Your opinion. It may well do that. The history says it was developed to increase NDLs
 
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?

Right so on a 25FSW dive what NDL is being extended?
 
And it does that by reducing nitrogen uptake, which works at any depth.

Can you prove that?
 
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.
 
Right so on a 25FSW dive what NDL is being extended?

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 )
 
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 )

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).
 
https://www.shearwater.com/products/swift/

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