I love that you're covering more technical diving lately. I'm taking the deco course now and then trimix is next!

That's why I had a wobble on a deep dive a few years ago. I was at 32m, naughty I know, and my head went a little fuzzy. It took everything to check and understand both my air gauge and dive computer. I came up a couple of meters and it eased off. I just kept concentrating on my gauges.

Thanks for always creating content for new-ish divers without making them feel stupid!

Hey James @DiversReady I just want to say your videos are amazing and have inspired me to take an open water course. I used all your advice to pick an instructor and he has been absolutely amazing he was patient and made sure I understood everything. I have my checkout dives this week.Keep putting out amazing content. Side note my instructor agrees with you that to take an advanced open water course you should have at least 25+ dives before he will even train you.

Great video as always James! Just a note, we won’t ever practically run out of helium, there are abundance quantities on earth actually, it’s just that it’s very hard to recover it economically so prices will likely remain high until we can cheaply source it from space later this century (possibly).

Brilliant and frank explanation! TMX is a must in many diving strategies, the down side is that a long and deep dive is going to cost quite a fortune..

Hi James, you are still one of the best to explain scuba topics. A wonderful, simple and interesting style. Thank you, a follower from the city of Jeddah on the Red Sea.

I'm merely an advanced open water PADI diver but you asked for nitro narc stories so... On my deepest dive, 130 ft, off the north coast of St. Croix, we were on a ledge of the reef drop-off. I was extremely euphoric and I had this Billy Idol song running through my head because it had been on the radio right before our dive. The instructor showed how colors other than blue were possible at that depth with a flashlight. Then he had us do some basic arithmetic on a chalkboard and I was less than precise. Only 13 minutes of bottom time if I recall, but it was super fun and I'm glad I was under the guidance of a professional. One day I'd like to get into technical diving.

I see myself going tec eventually not necessarily for going deeper, but definitely for deco so I can stay longer. Thanks for the good info.

I’m a PADI dive master and would like to get my instructor certification at this guys shop, I like his straight forward and no BS instructions

Great primer, thanks James.

Great introduction to trimix. As you said expensive but if you want to dive deep needed to stay clear headed and safe. Stay safe and keep diving.

Did my trimix training in 2011 red sea canyon can still remember the dive and the intense course. Homed my patients and skill.

I especially love your intro! With your experience as a technical dive instructor, I love seeing this content.

Thanks for the intro explanation of what Trimix is… as a recreational diver we heard about Trimix many times, but didn’t really know what it is.. great thanks

Great informative video! Keep it up James. Will be taking my first step into tech diving world in a few weeks time with an Intro to Tech course with TDI. Slowly getting there.

Love that last Narc comment on the fish.

I can say for anything deeper than 145-150 trimix is the way but at the same time as you just mentioned it can be so expensive. At this point if you want to keep the fun you better get into CCR.

was down at 120ft the other day, in this ravine between two walls, 50ft vis. Two of our little group of 4 were about 30ft ahead and above my buddy. I was trying to swim up to them, fully aware im narced out of my mind and i might have been ever so slightly negative, but it took me about a minute to start slowly ascending. that whole minute i felt like i was in a video game with no connecton, the buddy pair ahead of me looked like they were swimming but not moving at all and i legitimately thought for a second i was "lagging out" until i realized that it was actually real life and started working harder to kick up, once i ascended about 20ft my head cleared up but man that was a crazy experience

Good informative account , thank you

I'd like to see a cost breakdown of trimix vs rebreathers. How many times do you drop a couple hundred bucks on fills before it makes sense financially to go down the rebreather route. I'm aware rebreathers have their own ongoing costs and rigorous training and upkeep to consider

As always great content. Its tragic that the costs of helium is so high. Not only do heluim allow for deeper depths safeley, but it could also considerably prolong your bottom time if you would normally dive at air depths, provided you dishing out the exstra costs. I predict rebreathers are going to be all over the show in the years to come due to the rising costs of heluim. As a entry level tech diver i would love to progress down the trimix pathway on open circuit but the more and more people i speak to advises to stop wasting money and go rebreather a.s.a.p. granted the theory remains the same, but on a fraction of the costs compared to all the wasted heluim on open circuit. Bottom line if you going to partake in diving that absolutely requires the use of trimix, a rebreather, even a rental unit will work out cheaper compared to the costs of open circuit on trimix and it comes with way more benifits. The future of open circuit trimix diving looks dim

In the 1980's, before the term "techical sport diving" even existed, cave divers were using tri-mix to enable deep cave exploration. We were unable to get Medical Oxygen for deco bottles, so we'd use cascade systems to download o2 to scuba tanks from welding bottles! Helium was handled the same way, and it took a lot of trial and error to get the correct mixture checked with an o2 analyzer.

Great info. Thanks for sharing.

Very good summery 👏👌

New to the sport and the channel. Looking to retain my certs and go deep within the next 2/3 years

Awesome explanation, James. Enjoyed listening to it...specially the last bit😂Here goes trimix next. Cheers.

Deep diving is so cool y’all know any channels that go over it more and dive deep?

Great info. Very well presented.

Never knew Helium is THAT expensive! Thnx for this video. Very informative !

Did my deep course yesterday here in the UK. St Andrew's Lakes, Halling. 34m, pitch black and 7C. Dive 2 we had to do a navigation. Swam out, or attempted too, and thought that's strange. Doesn't feel like I'm moving. Didn't join the dots and had got caught on a line from the platform we were using. Knew there was an issue, but didnt do anything about it. Made the reciprocal baring easy to follow back to the platform though 😊

I loved the intro :)

Thanks for your video

My usual reaction to being narced is paranoia…specifically paranoia about suddenly discovering that I am in a lot of water. I know it’s happening because I look out at a beautiful underwater vista and think. “That water is really pretty…oh, that’s a lot of water, oh dear there’s more of that stuff on top of me, why am I under so much water?! This seems really dangerous.” These thoughts are so out of left field that every time it has happened, I make a deal with myself - “let’s just go up 10 feet where there’s less water and see if it’s narcosis” and though I’m still under lots of water, the feeling is gone pretty much instantly, so it definitely is. It’s happened to me at different depths, all of which I’ve exceeded on other dives with no narcosis and has happened to me in familiar locations as well. It’s an aspect of diving that I occasionally worry about, just because me and my usual buddy’s judgment are things I rely on, since we do a lot of shore diving and un-guided boat diving where the likelihood of us both getting narced is not that improbable. Given that I’ve been narced at like 75 feet (though my deepest is more like 95), I’m not even sure I’d want to go much deeper on air or nitrox…which does make the training and cost barrier to entry for trimix seem even more unfortunate. I’m even questioning some of the 95-100 dives I had been thinking about just because I can sort of picture how narcosis-based poor judgement could spiral into problems. For example, my buddy and I have shore dove the Harbor in Kona multiple times with a single tank, with the bottom at 95, but though it’s not an overhead environment, it’s at the entrance to the small boat harbor so you can’t surface directly without danger from boats and it’s sort of a long swim into the channel from where you drop, which is a bit of a hike over lava rocks to get to from the road. It’s also an area frequented by tiger sharks. We want to take two nitrox tanks each on sidemount and go look for Shawn the sheep that we’ve heard like the base of a huge buoy mooring there, but would probably take more time than an aluminum 80 at 95 feet after a long underwater swim can provide. When we were swimming out and back on a single tank without a task-loading mission like looking for and trying to photography microscopic nudis, it seemed reasonably safe, but I worry about getting narced and getting too low on air to make it back out of the channel before needing to surface. I wonder if I can rely on my normal narcosis paranoia to keep me from overstaying. For those depths that are below the traditional trimix zone and in what is considered traditional recreational limits, how do you decide whether the risk of narcosis is too great?

Thank you .. really appreciate the information

The more I dive the more I realize I'm still a newb, going to start bumping the limits of my current training before I move on

Thanks for the info very helpful. Rory Ireland 👍🏻

New to the channel and have watched a few others. I really like the information presented and the manner. Looking forward to catching up and seeing new ones.

If I had the resources I would moved to Florida lease a dive boat and dive with you for a couple of years, not everyday so we would hate each other’s guts but enough to glean some knowledge and get to that next level

Great info

With GUE we are trained to use trimix for all dives below 30 meters with at least 30% helium in the mix. Deeper than 45 meter dives at least 45% 😂 obviously you understand why basically all GUE technical divers own a rebreather.

Thanks for the great content James. You may want to turn off the auto focus on your camera to avoid having it hunting for the focus throughout the recording. Keep it up man

Thanks, dear friend. It's very interesting 👍

My worst narcosis experience. When I did my Extended Range course, our last dive was on the Jodery in the St Lawrence Seaway. 170 ft time to turn the dive. I asked which way to the line. My buddy pointed to it. I looked towards the line and then forgot. Almost immediately I asked my buddy again which way to the line. He then took me by the hand and we went to the up line together.

Great intro to trimix. Going to start getting myself ready for a sidemount class. After the trip to the Bahamas in Nov. 🤞🤞🤞

Great Video, with the limited supply of helium does that mean more people would then go the rebreather route ? can you do a pro's and con's on them ?

Thanks for all the useful info

Nice video!!

Pony bottle for air Re Drysuit simples, amazed why everything has to be made to sound soooo complicated, why not CCR it’s really quite straightforward

No I don't know from my nitrox class because I'm doing it tomorrow

I thought the main point of helium was to decrease the work of breathing to lower co2. I learned in GUE that co2 is main cause of narcosis

Off topic that is a very cute golden retriever

seems like CCR makes more sense

Wow James, sample and easy explanation about trimix, well done 🤙🏻

James, why don’t you mention CO2 as a major cause for narcosis? Because it’s not so much nitrogen as everyone is told to think. While at depth, say 6 atm, as long as you breath slow and deep it is possible not to suffer from narcosis as long as you don’t get a build up of CO2 in you body. Yes, everyone’s biology is different and different people suffer or don’t suffer narcosis at different depths. But between the surface and 190 ft it’s not a hard fast rule that all divers suffer narcosis.

I clearly need trimix because if I can't remember what I saw on a deep rec dive then why do it?

Who dives on twin-set and neoprene? Only in Cenote but side-mount - The diver on the video had No trim, No balance rig sketchy configuration I was afraid of that. This is some PADI tutorial Good luck with that - safe diving 👈🏼

6:13 What's the reason why (some) tec divers can proceed past the 30m mark, without the effect of narcosis? Is it just that they are used to it?

Me: "Why don't they just breath an oxygen-helium mix all the time?" - - $170 per tank - - Me: *spits out coffee*

"Exotic breathing gas mediums" oh so like hydraheliox, hydrox, and neoquad? ;)

wow it seems to be more safe than nitrox....but very expensive

Hey, haven't done much research regarding this but i am slowly learning regarding scuba diving. I apologize in advance if some of my terms are not proper. I have question regarding safety and for example when some of the incidents that happened while diving because the other guy didn't see or notice that his buddy is running out of air or has some sort of failure of his gear, so he either has to somehow get his attention in order for that other guy to share air with his buddy that needs help or that buddy need to do buoyant ascent. Why are divers not using full face masks with communication feature? I assume if that was the case we would have much less incidents. Maybe i am wrong and there are many bad side-effects or cons with taking that option. That's why i am kindly asking you or anyone else to answer me. Thank you again!

Not on the subject exactly, but would love your suggestion/recommendation on which dive shop to use during the FL key trip this October. Is there a list of highest rated dive shops (customer service, safety, equipment). Thank you!

Second stage to a fish… fucking brilliant

So, how soon will we be to using hydrogen more commonly for breathing gas? I see that hydrox and hyrdelox are both gas blends, but from the brief reading I've done I also understand that the current uses are highly specialized and are rather volatile. So, yes, I'm joking, but depending on what turn helium takes, what choice are we going to have?

Wel technicly helium can get narcotic. It just need alot more pressure. Below 150m diver stop using trimix and switch to full on heliox. No more nitrogen. But at like 300m helium gets a problem. You will feel it narcotic effect. And yes its insane deep. But saturation divers go there. They switch to hydrogen. Even lighter and less narcotic than helium. They went down to 540 or so meter in the water and 700m pressur room with it. It was basicly 5%oxygen and mix of hydrogen and helium for the rest. They never went beyond 700m. But at that moment you need liquid breathing. Or accept it and go in a submarine

Helium cannot be measured with any kind of electrochemical sensors .It can only be measured with conductivity sensors or ultrasonic sensors.It is neutral gas.

I am currently looking around for a set of double tanks and regulators. Planning to go into the technical side of things over the next few years. I imagine that sandard air regulators are fine for trimix, am i right? Thinkng that it is the O2 content that is critical, aka enriched air nitrox. Any comments?

So how does Trimix work in a rebreather?

I'm wondering which decompression software you recommend. and can we dive with pure helium and oxygen? so the decompression time is future reduced and NDL will be extremely long. if we consider cost is no the problem

Hey James, curious about your ears did you have any pain or irritation before your operation? I dove last week while getting over a cold and thought my sinuses were up to par but had a hard time coming back up from depth (had to take my hood off and stop around 30" for about 2-3 minutes to clear my ears) But now my ears have a slightly swollen feeling and my inner ear feels tingly almost itchy. Just curious if youve ever been effected similarly? im waiting to get into see my doctor in a couple days but im starting to get worried about it.

Well done; very interesting and funny.... hope you meant it to be at least a bit funny....

I had a buddy who went with me to 55m back on the boat, he said he saw kibbeling. and kibbling are fried pieces of cod🤣

Unless we can start extracting helium from asteroids or the moon. I think the moon has helium -3 or 4. Not sure. But whomever can capitalize on that mining will be a trillionaire pretty quick

I guess going rebreather is the way to go.

That intro, hahah

With helium being so expensive, and doing the tech diving that you do, why not go the CCR route?

James - would you say its easier to harder to get qualifed with a rebreather or trimix.

Hi James. Good video. Question for you: Does the use of helium reduce the deco time? I know the more helium the lower the END but, being helium also a gas in our system, does it take the same time to offgas as nitrogen? I know it allows you to go deeper due to lower END but somehow I have in my mind that it takes the same or more time on the stops to release the gas. I hope one of these days I will have the time (and money) to go and do some training with you. Or maybe use you as our guide in the keys. Regards, MIguel

Fyi 50m is 166.5 ft not 145 ft :)

I paid £47 to fill twin 12ltr tanks with 80/20 in the UK, anyone know the price in the US just for info please

So why not just do a bimix? O2 and HE? Leave the Nitrogen out

you are perfect hope to see you one day

thanks for the effort but way to much preablmbe

How much did the intro cost you then 😄?

If I stop having fun speaking in the squeaky voice, while gear up on trimix it is time to put me out to pasture.

.

Every time I see someone using Helium to inflate baloons, I think "well there goes more helium that could've been used in a hospital to save someone's life." divers consume the same resource as hospitals. just saying. I might go tech and want to go deep, but I'm hesitant to consume a medical resource.