Deep Diving on Nitrox question

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With Aldora, my son and I never dived with a group larger than 4 . We were well matched, always ascended together with the DM at the end of the dive. First dive air, 2nd dive EAN32, average dive duration 75 minutes. This included Devil's Throat, Cathedral, and Barracuda
Well, that's the profile I originally wanted to do in 2015. Sounds good to me,scubadada....
 
I recall in an older thread contrasting Aldora with another dive op., it was indicated that Aldora has the whole group ascend together at the end of the dive (the other op. sent people up in buddy pairs, for example, as their gas pressure ran low; which practice is more desirable was a point of some debate).

Is this still the case?

Richard.
We always ascended with the divemaster who flew the SMB to signal our location. With so much boat traffic in Cozumel, it's safer that way. With Aldora,if a diver runs low on gas early, the D.M will share with his alternate regulator to keep the group together.
 
When we were there, Aldora offered larger cylinders to folks who went through their gas faster, in order to keep the group together. I believe they were steel 120's ...

... Bob (Grateful Diver)
 
When we were there, Aldora offered larger cylinders to folks who went through their gas faster, in order to keep the group together. I believe they were steel 120's ...

... Bob (Grateful Diver)
Yes, that's what I was using.
 
When we were there, Aldora offered larger cylinders to folks who went through their gas faster, in order to keep the group together. I believe they were steel 120's ...

... Bob (Grateful Diver)

We found that my wife can go through even a steel 120 in 60 minutes on the deeper dives. We would ascend a few minutes before the others in our group--who were also using 120s--and shoot our SMB to alert the boat. Those are monster tanks to those of us of modest stature--next time we'll use the 100s.
 
We found that my wife can go through even a steel 120 in 60 minutes on the deeper dives. We would ascend a few minutes before the others in our group--who were also using 120s--and shoot our SMB to alert the boat. Those are monster tanks to those of us of modest stature--next time we'll use the 100s.

You are so correct. I'm a short, old guy, so just getting off the boat with those 120s was a struggle some days...LOL
 
When we were there, Aldora offered larger cylinders to folks who went through their gas faster, in order to keep the group together. I believe they were steel 120's ...

... Bob (Grateful Diver)
@NWGratefulDiver. Bob, did you ever see anyone dive sidemount with them? Are DIN valves available? I'll be traveling from now on with SM gear and a DIN-to-yolk converter for those times where I can't get a DIN valve.
 
I wonder what they do for those who do not use 1.4 as their max PO2? For years now I have been planning my deep dives using 1.3 as max.
That's due to my age, personal physiological assessment, usually diving cold water, and anything with a workload I consider more than usual.
This is because everyone's personal tolerance to oxygen toxicity is different. Divers have toxed at 1.3. It's not just about the PO2 level for that one dive. What is your total CNS clock saying?
Normally in my area we mix for the bottom. If there was a chance of hitting 130-140 and a little helium is not available for me it would be safer to use air and go into deco. Not being able to do that I'd choose not to do the dive. Especially if there were also non-overhead trained divers doing it as well.
 
@NWGratefulDiver. Bob, did you ever see anyone dive sidemount with them? Are DIN valves available? I'll be traveling from now on with SM gear and a DIN-to-yolk converter for those times where I can't get a DIN valve.
Not Bob and again I have limited experience with Aldora but as previously mentioned they use steel 120's and 100's all with convertable or DIN valves. I did not see SM used but they offer the option to remove BCD in water which the captain/crew then lifted aboard so dealing with SM shouldn't be an issue. But you will obviously need to confirm this with Aldora. Be prepared for backroll entry.
 
https://www.shearwater.com/products/perdix-ai/

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