Anyone get sick with Nitrox?

[RStyle]

I have been diving Nitrox for several years but never 36%
Went with a friend on a dive charter and and although the dives were less than 80 ft they had everyone that dove Nitrox on 36%. I assumed more O2, less fatigue, no problem. (We analyzed tanks before the dives)
After the 2 dives I felt tired and sleepy. Went home and slept a few hours. When I talked to my partner, the same thing happened to him.
Went out again on the same charter and got Nitrox 36%. Same exact thing happened.
Got home at 1pm after a couple of 60-75ft dives and went straight to bed and slept until 5pm. They were both benign, non stressful drift dives. My dive partner had the same experience too.
This had not happened before.
When we go out again, we are going to request air or 32% to see what happens.

 

[ONESPEED]

I have been diving Nitrox for several years but never 36%
Went with a friend on a dive charter and and although the dives were less than 80 ft they had everyone that dove Nitrox on 36%. I assumed more O2, less fatigue, no problem. (We analyzed tanks before the dives)
After the 2 dives I felt tired and sleepy. Went home and slept a few hours. When I talked to my partner, the same thing happened to him.
Went out again on the same charter and got Nitrox 36%. Same exact thing happened.
Got home at 1pm after a couple of 60-75ft dives and went straight to bed and slept until 5pm. They were both benign, non stressful drift dives. My dive partner had the same experience too.
This had not happened before.
When we go out again, we are going to request air or 32% to see what happens.

It's not likely the O2% is causing you fatigue, if anything it may be bad gas, did anyone other than you and your buddy experience similar symptoms?

 

[dkktsunami]

Not the 02 making anyone sick but could be contamination from the compressor or the tanks. 38% nitrox is good to 95 feet.

 

[DevonDiver]

V
E
Nausea
T
I
D

 

[Cave Bum]

Another vote for: 'Probably bad gas'

I think I'd find another charter, if it were me...

 

[Damselfish]

you say "sick" in the title but "tired" in the description. Not the same thing.

Have you been on similar charters before these 2? I would think so with that many dives and living in FL. But if not - aside from the dives you probably got up early, hauled gear, spent hours out on the water in the sun, etc. I might be ready for a nice nap too.

O2 shouldn't cause fatigue, quite the opposite if anything. I'd try and check with others who were on the same charter. If it's really bad gas and they haven't fixed the problem getting 32% is not going to help, and maybe not air either depending how they fill their tanks. You might consider getting tanks from another shop and bringing them along.

Maybe post your whole profiles if you have them.

 

[crpntr133]

If it is bad gas, going to 32% might make it worse. Less O2 to counter it. I wouldn't think that you would see that big of a difference , negatively, but I might be wrong. Personally I would get a fill from someplace else, let my buddy dive the charter gas and see who gets tired. I know it's not scientific.

 

[ptyx]

Unless everyone on the boat got sick, and given the symptoms (fatigue) I'd bet on screwed up deco.

Try to stay hydrated and in the shade.
Make sure to ascend really slowly - especially between 15ft and the surface (it's supposed to take at least 30 seconds).
You can try to add short 1' stops at 40 and 30 feet on top of the safety stop.

If that fixes it, you can tell yourself it would have been even worse on air

 

[Jim Lapenta]

Did you analyze the gas yourself and do you have a CO2 checker? I'd suspect that before anything, but Devon does bring up a point. You note depths but what were your times? Where was your CNS clock at and what were your PPO2 levels?

 

[ONESPEED]

V
E
Nausea
T
I
D

:huh:

Nausea was never mentioned by the OP.