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This "~" does not mean this "<". Please go back and look at your post. I don't think shutting down your necklace reg is ever a good idea. Better to have hypoxic gas than no gas. Even on OC taking "Air Breaks" with hypoxic back gas at the 10ft/3m stop has never been an issue for me. So I'm...

10/70 is .2 at 10m. Why is there even a question if this is an issue?

I don't have an ADV, but when I did, I turned it off above 10m. Either way you would have to do a full loop flush to have an issue. It's pretty standard these days to keep your bottom mix plugged in as your dill through the entire deco.

10/70 is only hypoxic above about 15'. Getting from there to the surface isn't a big deal on NDL dives. If there is concern about having to do work on the surface, I'll bring a 40 of O2. Edit: Air is 0.16 pp at my home, so my idea of hypoxic may differ from yours. Edit: typo on gas content.

@boulderjohn and @PfcAJ, I believe your arguing between planned and actual. Actually achieving 30fpm between stops seems difficult once you calculate in starting and stopping the ascent it probably ends up more like 10fpm. Personally these days I'll sit a couple feet under the stop and start...

I think this is more of a skill thing than a "need" thing.

https://www.dive2.me/solid-state-sensor-sauerstoff.html

The depth limitations is from the CMF and the O2 regulator intermediate pressure(IM). You would need a smaller CMF/needle valve and a higher IM to go deeper.

Making this up: The new ownership had to decline to produce the GO as they now own all of Mike's intellectual property. I'm guessing due to the plan to make a stacked SW configuration. The only thing recreational about the go is the canister size. Other than that it's a fully functional...

For those using a single dilout bottom gas, have you ever actually lost it on a dive? I ask because I used to dive that way, but actually having a lost gas situation changed my attitude about it. For me it was the 150' 21/35 scenario described above and I had to get up to plug in my 32%. I...

Finally got time to re-terminate my subcon cables. Hopefully I'll get back to regular downtime in a couple weeks.

I don't think I said anything about not planning dives.

Finding the hole and running the line at the champagne bottle "entrance" was one of my favorites.

With two Shearwaters, are you also carrying a watch and depth gauge to use with the written deco plan when both your PDCs fail? If not, then what is the point? All you need written is key navigation points and tasks, and that's only for sufficiently complex dives.

Halcyon valves have very good flow, so something is wrong with yours. Sometimes the duckbill valve clogs if it's not rinsed well after dives. Your suit should always be dry or it's not a dry suit and needs repair.

Unless the airline doesn't allow it, just pay for an extra bag. It's way easier, and cheap compared to the overall trip.

I have all the parts, but life has gotten in the way. I hope to have the conversion done and be back in the water by late June.

Go somewhere and get good Sidemount training then come back and do deco training with an instructor that is in back mount. Your tech instructor doesn't have to be in Sidemount just because you are.

Also, I'm thinking I'll probably give it around 100 hours then decide if I want to add a second. I'll likely never run 3 solid state sensors.

I can say from experience, that on dives at this depth you can be symptom free until the last 10' ascent to the surface.