Once for extruded O-ring on a Sport Kiss, and once for CO2 breakthrough from using poor quality sorb. Medical sorb != diving sorb.
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That's exactly it. I had one due to an improperly sized neck seal paired with a bit too much exertion 30 minutes into a cave at 160'. And that was on OC. It's very much possible. It was a slow build. Feeling a little more narced than I felt like I should have on 18/45 initially. Then I was consistently just a bit behind on my buoyancy. Then I started feeling overworked and winded. By the time the anxiety and creeping panic/dread started to set in, it was hitting hard. Ended up cutting the neck seal and flooding the suit, but it took a couple minutes to get my breathing under control to the point that I felt comfortable moving towards the door and another 15 or so minutes after that to get back to baseline RMV. I had to take off my hood, as any pressure on my neck felt unbearable. It was probably psychological, but I was at a point where I was feeling spasms in my throat, like I physically couldn't breathe enough. Easily the scariest diving experience of my life. I remember having to talk to myself mentally when it was hitting hard and tell myself to focus on getting my breathing stabilized before anything else or I wasn't going to make it. 0/10, would not recommend. That said, it was a really valuable learning experience in a lot of ways. I'm hyper aware of all the little things that led up to that now and I feel reasonably confident that I'd pick up on a CO2 hit on the loop a bit earlier than I otherwise would have without that experience.
I think it was ... We got a batch of it that was already a bit damp and was really difficult to pack no matter what you did... moved over to Sofnolime & so far that hasn’t happened againBy any chance that really dusty stuff that turns pink? (Grace Sodasorb, I think it was called). That stuff had bigger grains, was soft and very dusty. Nasty dust when packing - which I always did outside.
My only breakthrough happened with that stuff many years ago. Since I switched to the Sofnolime which has much smaller grain size and is harder and much less dusty and have not had a breakthrough since.
That is interesting. Many report high levels of anxiety when experiencing high CO2 levels but my experience was similar to yours. I felt only slight discomfort but my buddy was concerned about my behaviour. I was still somewhat in denial about what happened except it was all caught on camera and although not as dramatic as the Sky News Co2 event (every rebreather diver should see this ) my behaviour was anything but normal.yes!! I have to say it was the most horrible feeling I’ve ever felt well Diving for me. I felt like I was breathing normal but I was told later that I was hyperventilating. the funny thing is I had no idea how hard I was breathing
That is interesting. Many report high levels of anxiety when experiencing high CO2 levels but my experience was similar to yours. I felt only slight discomfort but my buddy was concerned about my behaviour. I was still somewhat in denial about what happened except it was all caught on camera and although not as dramatic as the Sky News Co2 event (every rebreather diver should see this ) my behaviour was anything but normal.
That is interesting. Many report high levels of anxiety when experiencing high CO2 levels but my experience was similar to yours. I felt only slight discomfort but my buddy was concerned about my behaviour. I was still somewhat in denial about what happened except it was all caught on camera and although not as dramatic as the Sky News Co2 event (every rebreather diver should see this ) my behaviour was anything but normal.
That is interesting. Many report high levels of anxiety when experiencing high CO2 levels but my experience was similar to yours. I felt only slight discomfort but my buddy was concerned about my behaviour. I was still somewhat in denial about what happened except it was all caught on camera and although not as dramatic as the Sky News Co2 event (every rebreather diver should see this ) my behaviour was anything but normal.