Preferred mix in a pony

[hex92]

I used a pony for a couple of years before stepping up to doubles. I never filled it with anything but air.
Reasoning: I wanted to be able to breathe it at any depth and I didn't want to have to pay to get my tank cleaned for nitrox.

 

[The Chairman]

You know, I dove with a 19 cf pony for over five years and then I sold it. It had the original VIP and Hydro and needed both. I never put myself in a situation where I ever needed to use it and it still had the original fill.

 

[Thalassamania]

Air and only air in a pony. The problem with MOST divers who use a pony is that they end up factoring this in their bottom time calculations. These are the people who seem to like having a NitrOx mix in their pony. If it is only for an emergency, then air is always your safest bet.

Except, of course, on a dive deeper than the MOD of air.

 

[daniel f aleman]

Except, of course, on a dive deeper than the MOD of air.

And, how deep would that be?

 

[The Chairman]

Except, of course, on a dive deeper than the MOD of air.

No, then I would diving with Stage bottles with far more gas than a pony could provide. However, for me, your question is moot as I rarely go below 100 fsw.

 

[Thalassamania]

And, how deep would that be?

Since it's an emergency gas supply and would only be used to immediately initiate an ascent I'd be comfortable at 230.

 

[in_cavediver]

Since it's an emergency gas supply and would only be used to immediately initiate an ascent I'd be comfortable at 230.

Sorry Thal - still a poor choice. Well, unless your packing a horse tank rather than a pony. Air consumption rates are just to great at those depths to rely on a 'pony' to get you to a deco stop with a comfortable margin. There are better choices for the foray's below 130-140.

Now, you call it a 'safety' bottle, you could discuss the merits of this. I'd still lean heavily to a 'horse' tank though.