Air consumption

[MXGratefulDiver]

... aquariums are probably one of the few legitimate uses for Spare Air ... since you can't get very deep ...

... Bob (Grateful Diver)

 

[SillyQuestions]

This thread is one of the worst I've ever seen!


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[DivemasterDennis]

Here is a checklist to review as far as why you are sucking air, from The Scuba Snobs' Guide to Diving Etiquette:

Not everyone uses up their air at the same rate...You can, through good diving practices, reduce your air consumption. Here are some tips for you air suckers to improve your bottom time:

a) Check your weighting. If you go through air faster than everyone else, there is a real good chance you are over-weighted or under-weighted.
b) Trim your buoyancy often. We regularly observe other divers and see that they cannot hover. To remain at a certain depth, they are kicking or moving their arms to maintain that depth. Those movements burn air. Use your low pressure inflater/ deflater- that is what it is there for. Maintain neutral buoyancy and you will use a lot less air.
c) Move less. Swim less. Stop and smell the coral. Look for pretty little things under ledges. Don’t be in constant motion.
d) Stay a few meters above the rest of the group.

I am going to guess thatRdrink25 has a problem with item (c) and should focus there. Something is causing your to breath deeper or more rapidly than everyone else, and the first and most likely cause is you are moving a lot more than everyone else.
DivemasterDennis

 

[MXGratefulDiver]

This thread is one of the worst I've ever seen!

... you must be new around here ...

... Bob (Grateful Diver)

 

[Manneca]

Meditate. Seriously. You will become more mindful and breathe less. I'm overweight, and not in great shape and 68 and I'm usually the last one up on a dive. (OTOH, being female helps).

 

[RJP]

This thread is one of the worst I've ever seen... since joining SB a few months ago!

Fixed it for you.

PS - We could discuss whether a tank gets warmer or cooler when it is transfilled from another tank... or the value of a Master Diver certification if you like.

 

[SillyQuestions]

Fixed it for you.

PS - We could discuss whether a tank gets warmer or cooler when it is transfilled from another tank... or the value of a Master Diver certification if you like.

Been on scubaboard for a very long time intermittently, old account was junior diver. As well as 4 other forums.


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[ScubaInChicago]

We could discuss... the value of a Master Diver certification if you like.

I think this could help the OP with his breathing problem.

 

[Basking Ridge Diver]

The last O.C. tech dive I did with a bottom AL80 stage lasted for 35 min @ 200' In 2-3 knot currents (worked a bit harder than usual). Deco was a lot better

So if I did the math correctly -

RMV = ((PSI Used / Working Pressure) x Cylinder Capacity) / (((Depth / 33) + 1) x Minutes)
.16 =((1600/3000)*77.4)/(((200/33)+1)*35)

Did I get that right? You used 1600 psi of an AL80 at 200 feet for 35 mins for an RMV of .16?
I have been thinking about this one for awhile - that is either tremendous or I must not understand correctly.

 

[TSandM]

I find those numbers extremely startling. In the last five or six years, I have dived with one person who routinely outlasts me on gas, and his SAC rate is in the high .2's.