best pony bottle?

[JWDive]

what would be the best pony bottle for deep (130'), cavern, wreck type of diving. As far as size goes anything from 6 cu ft - 40 cu ft will work for me. As long as it can be O2 cleaned. what would you reccomend?

 

[Scared Silly]

For deep (130'), cavern, wreck type I would prefer and recommend a set of doubles. Otherwise I would suggest a search as this gets discussed ad-nauseam.

 

[diveandclimb]

Use doubles and get training which addresses this. If you need to use a pony sling an AL40.