Cheap Hookah! We build a Surface Air Breathing System.

[@SVImpavidus]

Finally!!!!! Part 2 of this video is here kzbin.info/www/bejne/Zoivn6CVa5qKbNk enjoy.

[@benhuffington8482]

dangerous video. you need a better filter/compressor/hose or you will ruin your lungs. And you speak from a position of authority, which is irresponsible.

[@yk10yk]

@@benhuffington8482 better filter/compressor/hose in what way?

[@SVImpavidus]

@@benhuffington8482 care to clarify. Or just an armchair critic?

[@cgodwin336]

I appreciate you sharing your knowledge with us and this is an amazing video. Thank you and your wife for trying to help others with your knowledge. 😊

[@SVImpavidus]

Our pleasure!

[@tangmo1953]

Thank you

[@SVImpavidus]

@@tangmo1953 thanks for watching. Please look at part two.

[@johnnyricco625]

Thank you for the diving lesson. I appreciate the education on diving safety as well as putting together my set up.

[@SVImpavidus]

Our pleasure!

[@ironmalice93]

Great video thank you for taking the time to share this with us!

[@SVImpavidus]

Glad you enjoyed it!

[@ChasingCurrents]

Main parts used 😊 Stanley DN200/ 10/5 AIRBOSS air compressor Perfeclan explorer second stage regulator Nobelair Anti static reonforced breathing air hose 3/8" ID 5/16"

[@SVImpavidus]

Just about spot on. When we do our update in a few weeks, we will have a full list with links using Amazon.

[@ChasingCurrents]

@@SVImpavidus amazing 😬

[@niktah223]

@@SVImpavidus please!!!! I’m about to look everything up right now and purchase, I appreciate your DIY video

[@whileysea]

Dear Authors. I have been searching for a very long time for something like this. I prepared my 33ft Sailboat for the last 9 years in Spain, to be able to sail back home to Vancouver Island. Too much work, never enough money. The usual thing. Can your System support 2 people in about 12 Meters? Is it capable to do so? Is it very difficult to service belt and all? Could you please state all materials and where bought? I wish, I could support you financially, as I know, that your work, your expertise and keeping the boat in good condition costs a lot and we are not only watching with big Eyes, we are providing from you. As you enable us all, to build something, we would never do without your knowledge. Please accept my sincere Thanks. Andy

[@chuckschillingvideos]

Perfect for bottom of the pool maintenance. One thing - I STRONGLY advise against using these worm clamps when attaching things to your airline. Worm clamps loosen over time, which is decidedly undesirable for an underwater breathing apparatus. Single ear clamps (technically they are called "oetiker" clamps are far more secure and have the added advantage of no sharp edges, unlike worm clamps.

[@SVImpavidus]

Thanks for watching.

[@DanaCrosby]

Thanks for the Video!! I have been building one myself for Searching. I have shared it on my Channel

[@SVImpavidus]

Awesome, thank you! Send us a link so we can share yours too. Ant.

[@flank84]

Excellent and informative video! This is why I love KZbin.

[@SVImpavidus]

Thank you. Ant.

[@ItAintMeBabe99]

Very nice! One suggestion is to add a harness so that the regulator isn’t always tugging at your mouth.

[@SVImpavidus]

Thanks for watching.

[@YouTube_user3333]

Generally the hose is attached to a D ring on your weight belt.

[@raymondvandijk7116]

thank you once again .................................

[@SVImpavidus]

Always welcome

[@ronniesherpalee4150]

Great video and information, and like you shared what you have gone through and still at it. 56 and looking to get our 1st owned family SV. Cheers and good winds from Ventura Ca…

[@SVImpavidus]

Let us know how you get on and keep us up to date. We love to hear other peoples stories. Sail Safe Guys, Ant & Cid

[@ronniesherpalee4150]

@SVImpavidus Thank ya kindly for your correspondence and support. Sure will and looking forward to going through your content...

[@ChasingCurrents]

This is brilliant, I've looked so many times at making one like this but just never had the confidence to do it. You have made this seem very straight forward and like a good project. Were both certified Brynn to rescue and Jade open water. We cant wait to see a video where you show it in use. It would be really useful on our small boat as we have no space for cylinders etc. Loving your content guys :D

[@SVImpavidus]

Thanks for watching, glad you liked it.

[@ChasingCurrents]

@@SVImpavidus Hey, i don't suppose you would be able to put up a list somewhere of the parts you used :D It would be super useful :)

[@philcloete]

Fantastic, very concise. Been looking for just this video. Going to make my Hookah. Thanks SV Impavidus.

[@SVImpavidus]

Glad it was helpful!

[@mckenziekeith7434]

Cool. But why such a low pressure? I thought second stages are usually supplied by air at around 10 bar (140-150 psi). Is it a special low pressure second stage? I am making a similar setup but using a standard scuba regulator. I plan to run it at 125 psi (8.6 bar).

[@SVImpavidus]

We dont use the hooker below 3 Mtrs so we do not need the higher pressure. A standard DV works fine. Also we have limited solar power on board so we keep it simple and low power. Sail Safe mate. Ant & Cid

[@gsjsantos]

Very informative.

[@SVImpavidus]

Glad it was helpful!

[@WildDigger]

Great Video on this. I built my own for shallow water 10 feet max is all I plan on using it. I run 2 10 micron inline filters in mine. Good job. 👍 Matt

[@SVImpavidus]

Thanks Matt 👍

[@anastasiosvanderpas7463]

Another greatly informative video!!!!! Thank you!

[@SVImpavidus]

Thank you. Be sure to watch the next part of the video when we suggest some updates and alternative equipment as well as how to use the Hookah safely. Thanks for watching.

[@anastasiosvanderpas7463]

@@SVImpavidus Thanks again, I surely will!!

[@RobertStrickland-op5qz]

What size compressor would I need to support 4 to 5 divers for scalloping and lobstering? The dive is around 3 to 6 feet for both. Appreciate the information you provided especially about the importance of safety and understanding atmospheric pressure and what can happen to your body.

[@SVImpavidus]

21 litres per minute for a fit woman and 26 litres a minute for a fit man. That's at the surface. so I suggest that you need to allow for 30 LPM x 6 at the surface. That's a commercial size compressor and there is the question of licensing etc as there is with any commercial enterprise. Your need to ask you insurers what they recommend.

[@skulijakobsson5116]

Nicely done!

[@SVImpavidus]

Thank you! We have a follow up in a few weeks for which we have some footage already done. It's just the water shots we need to do. So be sure to hit the reminder bell. Sail Safe mate. Ant, Cid & the pooch crew.

[@SailingLearningByDoing]

Nice video guys, thanks. Might build one of these next time I get somewhere that I can order the bits and pieces.

[@SVImpavidus]

Hi Mate. Thanks for watching. We are going to do a follow up. We have found some cheaper supplies and parts. Also we want to do a Basic how to use the Hookah, show some basic dive techniques. Some off the footage is done but, the water is only 15 C here!! Love your chanel (as you know) Sail Safe Guys, Ant, Cid & the pooch crew.

[@SVFresh2Salty]

Thanks for putting this together. This is going to be really useful !!!

[@SVImpavidus]

Thanks for watching. Glad you liked it. Sail Safe Guys, Ant, Cid & the pooch crew.

[@Tim8mit]

brilliant

[@SVImpavidus]

Thanks. Be sure to watch the next installment when we test the gear and show how it works. Its a few weeks away as the water is pretty cold at the moment. Sail Safe mate. Ant, Cid & the pooch crew.

[@bertram5798]

Great video, thanks!

[@SVImpavidus]

Thank you Bert. We will be following up this video with a how to use the Hookah. Some basic diving techniques. Etc. As soon as the water warms up a bit. Sail Safe mate. Ant, Cid & the pooch crew.

[@jamtree9746]

I have one of these -I advise you get a 3 stage breathing air filter after the compressor. Not expensive and well worth the safety.

[@SVImpavidus]

Check out the follow up video for updates. 👍

[@SailingEmeraldSteel]

Really enjoyed this! Very interesting... although we already have our own;) All the best to you both and the pooch crew!

[@SVImpavidus]

Thank you both. It was quite a bit of work to get the physics explained but we think it will bring value to our subscribers. We have 5 people in the marina here now building them. Sail Safe Guys, Ant, Cid & the pooch crew.

[@LarsLarsen77]

I'm going to build one for gold sniping in rivers and creeks. The rivers are only a few feet deep anyway.

[@SVImpavidus]

Send us some of your first haul 😁👍

[@systemdetectorsbuscadoresd5349]

gracias amigo desde Colombia, saludos

[@SVImpavidus]

Your welcome.

[@SailingSunday]

If you want to test it out, come around tomorrow!!! I have a wetsuit you can borrow!!! :)

[@SVImpavidus]

Oh what a shame i'm out tomorrow. LOL

[@philkibble]

Excellent video, this is the first time viewing any of your 'stuff' and am very impressed with your presentation style and clarity with your explanations. One thing I did think of when watching this was about reg clearing when under water, or do you think that at such shallow dives, under a boat, there would be little use for an explanation of it as the diver should be able to reach the surface fairly quickly even if neutrally weighted?

[@SVImpavidus]

Thanks for watching. Getting to the surface if your not wearing weights is no problem The issue is trying to stay down under the boat when cleaning. You take a breath in and then its hard to stay down to clean.So its almost certain most people will need some weights. Sail Safe mate. Ant, Cid & the pooch crew.

[@guyb3410]

Whens the updated video coming out? Would like to see it used in the water as well... Great video by the way. Very interesting...

[@SVImpavidus]

Guy we are hoping to start the technical videos in a few weeks when we get to our winter marina. We will film it being used in the next few days when we at anchor and giving the bottom a rub over. Thanks for watching. Sail Safe mate. Ant, Cid & the pooch crew.

[@guyb3410]

@@SVImpavidus Cool, i look forward to it. Great stuff, stay safe...

[@grahamdixon2190]

Great video. I've bought all the kit but am having difficulty sourcing the quick connect fitting from the hose to the compressor. I am in Italy (Brindisi). Can you advise please? Thanks. G

[@SVImpavidus]

We used the local DIY store in Licata. It is a standard air fitting. Try Amazon they do have them and you can use Amazon in italy. Sail Safe mate. Ant & Cid

[@stellasbay8345]

Thanks for another helpful video! When showing the ad for the compressor, you said ”Remember, it must be an xx compressor.” Being non-English speaking, I did not get xx. May you please clarify? Thanks!

[@SVImpavidus]

You are correct. It has to be an oil less compressor. One that has no oil to lubricate the piston (s). Hope this helps Sail Safe Guys, Ant, Cid & the pooch crew.

[@raymondvandijk7116]

at how many hours do you change your oil and fuel filters as you mentioned you did it at 200hrs but you thought it was a bit early because of that..................................

[@SVImpavidus]

It depends on the seasons use. If it is a lot we do 200 hrs. If not 350 or so. Ant .

[@bearbait2221]

For old guy use only:) Diaphragm air pumps are for human air supply. You can use a piston pumps but you will get contaminated air with oils and other nice things that will kill u later in life in the air :) There are kids diving at gold mines in Africa that use old trash air pumps all day every day it works but at what cost? Nice dive air hack good for short jobs. I've run different cheap air pumps for diving and at the end of the day with a piston pump i can taste oils and metal in my mouth :( i will "Never" go back to a piston style pump but it is good for small quick jobs.

[@SVImpavidus]

Clearly you know very little about the subject and have not watched the video in it's entirety before committing to the keyboard. So to correct your inane jabberings in the order they were made. 1. Diaphragms are not capable of producing air at the pressure required for breathing air at depth or charging dive cylinders. 2. They are not used in leisure or commercial dive compressors for this reason. 3. This compressor pump uses an oilless piston compressor pump as pointed out in the video. 4. As stated in the video the pump has an air filter in line filtering the air before the compressor. The filter is around 30 microns. 5. As per your regular dive cylinder and compressor, this compressor has a bare metal cylinder, piston valve and storage tank. Totally different from the oil lubricated compressors used in third in the world. 6. This is not a hack. 7. Dive safety is about depth as well as the duration. Depth is the prime calculent in dive decompression calculations. "Short" does not make a dive safer. 8. Not all piston pumps are oil lubricated. Professional compressors are but have a series of filters and dry chemicals that the air is filtered through before it enters the cylinder. If you were a certified diver you would know this. 9. Small quick jobs? Irrelevant.

[@bearbait2221]

So sorry this backwoods Alaskan gold dredger has been diving for 20 years on hookahs never got trained just dive. I may be ignorant put i don't see your compressor in the vid filling dive tanks. LOL i have dove for over 6 hours did get a lil loopy i though it was hypothermia. I will watch ur vid again and try to learn from it. Thanks for your time. The jabbering continues :0

[@neill5540]

Very much enjoying the tech videos. Any chance of explaining in a videof your boat choice? (specifically why Bavaria, as they get a lot of stick on the forums)

[@SVImpavidus]

Niel. Yes we are working on a video that explains our choice. The title will be something like "Not a bluewater boat?" We need some sailing footage to put with it so it will be later rather than sooner. It will also probably take a bit of flack from the "Traditionalist"... LOL Sail Safe mate. Ant, Cid & the pooch crew.

[@medion773]

Is it possible to install two regulators through a Y connection and still only use one compressor? Best regards

[@SVImpavidus]

No. You need to have a minimum of 21 ltrs a minute for females and 26 ltrs a minute for males. That is at the surface. At depth you use more. This equipment is for one person only.

[@silvio2000ful]

@@SVImpavidus What if i use a 50lt compressor? Is it ok to use with 2 persons? Thank you

[@1962gms]

Really interesting video, I can really see the value of this - especially in warm water! Keep the great content coming & enjoy lockdown 🙄

[@SVImpavidus]

Thank you! Will do! Sail Safe mate. Ant, Cid & the pooch crew.

[@timdowney02]

Look into wire clamps they are way better the screw clamps less to get cut or hung up on.

[@SVImpavidus]

Will do.

[@RonKuris]

I don't see a one-way valve in this system. Most off the shelf hookah systems include one. My understanding is that these are needed in case the hose pops off the compressor or breaks near it, as it can create a strong suction which could suck the air out of your lungs, possibly even break your second stage regulator. Have you considered adding one to this setup?

[@SVImpavidus]

Ron. That an urban myth that has no foundation in fact or physics. At less than 3 metres depth the ambient pressure is less than 0.6 of a bar. It like saying a fast descent in an unpressurized aircraft would suck the air out your lungs. Commercial dive rigs dont have one way valves and they dive much deeper using tri-mix gasses at very high pressures. Ant

[@RonKuris]

@@SVImpavidus I wonder why OSHA requires it then. See OSHA 197.310

[@RonKuris]

I took physics in college but most of this is way over my head. I just reread your comment about commercial dive systems. Are we still talking about a surface air system? If it's tanks then the odds of pulling the hose off the tank are practically zero, and the OSHA rules wouldn't apply. They only talk about the compressor case. On a surface air system, when you run out of hose, or you get tangled in it, the odds of yanking the line off at the compressor end logically seems higher. The other risk pointed out by some of the other references I saw imply that a strong vacuum will be formed due to the physics of having a long hose all the way to the surface. The article I read talks about 1-2 atm not a few feet down though. Seemed like they know more than I do. Also I don't understand your analogy to flying. Seems like when you descend in an airplane you never experience a vacuum. Perhaps you're saying that a vacuum does not form when the hose breaks at the compressor? I will keep reading but would love to understand this more.

[@SVImpavidus]

​@@RonKuris Because Osha regulations are based on SABE that is capable of greater than a max depth of 3 metres. This equipment is for boat cleaning and maintenance ONLY! Not saturation diving. Watch the first part of the video again.

[@Nacho2034]

@@SVImpavidus I’m a commercial diver and you couldn’t be more incorrect. We have check valves that must be inspected and tested before making a connection to the divers umbilical (air supply line). If a check valve fails and the breathing air hose is severed there will be a rapid loss of ability to breathe. The deeper the dive the faster and more catastrophic of a response you’d get. Please look into it further. There are a lot of people reading these comments, someone could get hurt taking your advice. Always have a check valve folks! We commercial divers have a check valve (one way valve) on our dive hats.

[@castor3217]

Zu spät gesehen und viel Geld ausgegeben tolles Video toll erklärt danke Grüße gute Fahrt

[@SVImpavidus]

Thanks for watching.

[@airiharuki4432]

I didn’t notice any update video on hookah.

[@SVImpavidus]

We have not done one yet. Its been a bit tough getting around for one reason and another. Thanks for watching.

[@BrianClunie]

Thank you for sharing, I just Subscribed

[@SVImpavidus]

Great stuff.We have had no internet for a couple of days so only just responding now to comments. Be sure to watch some of our other videos. Sail Safe mate. Ant, Cid & the pooch crew.

[@johnsorenson8735]

Hi love your video.

[@SVImpavidus]

Thanks for watching.

[@kwhakarau5172]

Wow awesome mate have been looking at a powerdive but its really expensive $4000 nzd. wanting to use upto depths of 8-12 meters max for crayfish and would i need a stronger compressor?would this be suitable?

[@SVImpavidus]

Not really suitable. £mtrs is really the max you can do with this set up. You then need to start thinking about decompression time

[@georgealeong8188]

what about the fuel filter it is not food grade it is for petrol

[@SVImpavidus]

Take a look at the follow up video... kzbin.info/www/bejne/Zoivn6CVa5qKbNk

[@mhtz6031]

Hi Can i use it for like 5 hours with no heating problems ?

[@SVImpavidus]

It depends how much air you breath. But, it sounds like you need a commercial SABS. 5 hours as 100% duty is a ot to ask of a small machine.

[@FlesHBoX]

It's funny, when people say they got a hookah I don't think prostitute, rather the first thought in my head is "hashish?" lol. This seems like a great option for bottom work, but I feel like for exploration scuba would still be a better option, at least for me. This was a lot of great info here. Eventually when I get out there, one of my priorities is getting a padi cert, and this video really shows why getting certified is important. It would be easy to think "eh, it's just an air tank, why do I need some special training to teach me how to breathe?", but that's a surefire way to put yourself in danger. If you guys wanted to share more info on scuba training (what is involved, what types of thing you have to learn, (the book learning stuff before you actually get in the water) that would be awesome to start to get an idea of the principles.

[@SVImpavidus]

Thanks for watching. We did not want to make this a diving video, simply a how to video. When looking for the breathing air hose we googled Hookah and found nothing but hass pipes. LOL When we get time we are going to do a how to video on using it but as we said we strongly advise people to get in a SCUBA club and learn to dive properly. Sadly some will not and will just do their own thing. Mabe a few good entries for the Darwin awards this year.... Sail Safe mate. Ant, Cid & the pooch crew.

[@YouTube_user3333]

If you want to get a scuba certification, I suggest anyone but PADI. Their training is sub par. The running joke is PADI stands for “put another dollar in”. If you want good training, don’t go cheap on price. Other agencies have a much higher standard of training.

[@joegauci3449]

Excellent video Ant! Useful concise and well explained. Just curious if you can really run it off an inverter? Don’t know much about electricity but would you need huge batteries to run this being 1-90w?

[@SVImpavidus]

Joe Hi. Yes it can be run from an inverter. You do need to have a full sine wave one to enable the motor to start. Also it need to be big enough to run the 1500 watts the compressor draws @ 230 Volts. Our is 3Kw pure sine and we have 400 Amp hours of batteries. However running from a small generator would be best or have the engine running as you use it. Thanks for watching. Sail Safe mate. Ant, Cid & the pooch crew.

[@haktun8351]

Danke danke

[@SVImpavidus]

Your welcome!

[@zxggwrt]

I like your video because I'm trying to do the same setup, basically. However, I disagree with using that plastic fuel filter. If you can't find one made for air compressors then I'd consider a metal case fuel filter. The plastic one is perhaps prone to break if stressed.

[@SVImpavidus]

We have changed to a metal and glass water separator and filter. But to be honest its not necessary as there is a filter built in to these units. Sail Safe mate. Ant, Cid & the pooch crew.

[@TopnotchitTX]

@@SVImpavidus What filter did you end up with?

[@debbiepowell8623]

You did a real good job on making this video Most of the videos just tell to take a PADI dive course without telling them why and touching on some of the dangers involved. Yes it would be good to get a water filter separator made for a compressor. I got carried away when I made mine by putting such thing like a low pressure switch and audible alarm etc. Paid to much for the hose. But I'm 67 now and can't hold my breath to clean the bottom, clear a prop or change a zinc on our 38 ft. cutter. Thanks for the video.

[@SVImpavidus]

Glad you got something from the video Debbie. It is why we make them. Sail Safe Guys, Ant, Cid & the pooch crew.

[@YouTube_user3333]

If you want good training don’t go with PADI.

[@sean7193]

where did you buy the hose?

[@SVImpavidus]

www.ebay.co.uk/itm/271554515822

[@khalid77lion49]

‏أنا أريد هذا الشيء من اختراعك الجميل أن استعملها في الغوص في البحر

[@SVImpavidus]

يجب عليك استخدام زجاجات الهواء المضغوط على ارتفاع 20-25 مترًا وتحتاج إلى تدريب على استخدامها. الغوص بأمان.

[@spaRTan3246]

Any ETA for your update video? 😃

[@SVImpavidus]

It will be a while. We have used it and are making a few minor additions. The only issue so far is the duty cycle of the compressor in hot weather. 10 to 15 minutes before the thermal trip cuts in. But we have a solution or two. Sail Safe mate. Ant, Cid & the pooch crew.

[@adamrothgarn]

Can I buy one from you? If not can you include Amazon list

[@SVImpavidus]

Adam we dont sell them and we are in Turkey at the moment where Amazon is not the same. Where are you located? Ant.

[@john5726]

Hi Ant just watch you video fantastic presentation really learnt a lot, I noticed you turned down the pressure to the demand valve to 1.5 bar normally they are set at work at10 bar for a second stage did you have to get it modified by a dive shop or did you do it yourself? Many thanks john

[@SVImpavidus]

Hi John. The DV works at UP TO 10 Bar it supplies air at ambient pressure so for this type of use it only needs to be set at 1.5-2.0 bar as the pressure in water is 1bar above surface pressure for every 10 metres of depth. Sail safe.

[@matcina8207]

Are you selling this? Link?

[@SVImpavidus]

No we are not selling it Mat. Thanks for watching.

[@salehissa3444]

Maximum diving depth and number of hours

[@SVImpavidus]

3 Mtrs - refer to pump duty cycle. But otherwise unlimited.

[@pmacgowan]

You need a NOMAD unit

[@SVImpavidus]

A What?

[@sparky6612]

Blu3 Nomad unit, $2k + though. Not cheap.

[@khalid77lion49]

‏مرحبا كيف أحصل على إعادة اختراع يغوص في البحر على عمرك 20 متر أو 25 متر وشكرا

[@SVImpavidus]

يجب ألا تغوص في هذا العمق دون تدريب وفهم للمخاطر. أنت حقا بحاجة إلى الهواء المضغوط المعبأ في زجاجات وليس الشيشة. الغوص بأمان يا صديقي.

[@dennisnorth1250]

Hi..I've just found you by searching cheap Hookah (mmmm).. Very well presented video..i'm not an experienced diver (yet) but a mechanic. i'm not sure i'd trust that fuel filter under pressure especially if it's been out in the sun for a while. please consider using a proper air line filter/seperator like a spray shop would use ( they're not expensive and paint sprayers insist on clean air too)..Best wishes....Den ... P.S. not one of your aformentioned health and safety pussys or keyboard smartarses. Just saying those filters aren't great...

[@SVImpavidus]

Hi Denis. We have actually removed this filter now. We are going to do an update on this video as soon as we get some footage of us using it. Thanks for the comment and the honesty! Sail Safe mate. Ant, Cid & the pooch crew.

[@stellasbay8345]

Hi Dennis, any link to such a preferable filter would be highly appreciated.

[@TopnotchitTX]

@@SVImpavidus any update on your new filter?

[@zachre8638]

Harbor freight air compressor are cheaper and are bullet proof

[@SVImpavidus]

Harbour Freight is only available in the USA 🇺🇸

[@bachris764]

Not once did you advise to balance ears!!!

[@SVImpavidus]

Chris it's coming up in a future video when we show how to set it up and use it. Sail Safe mate. Ant, Cid & the pooch crew.

[@lucesainte-marie9017]

Why do you blast Wikipedia in the first three seconds concerning Oxygen ? Citation : Composition Further information: Atmospheric chemistry Following on from the above diagram, if the exhaled air is breathed out through the mouth on a cold and humid conditions, the water vapor will condense into a visible cloud or mist. Inhaled air is by volume 78% nitrogen, 20.95% oxygen and small amounts of other gases including argon, carbon dioxide, neon, helium, and hydrogen.[17] The gas exhaled is 4% to 5% by volume of carbon dioxide, about a 100 fold increase over the inhaled amount. The volume of oxygen is reduced by about a quarter, 4% to 5%, of total air volume. The typical composition is:[18] 5.0-6.3% water vapor 79% nitrogen [19] 13.6-16.0% oxygen 4.0-5.3% carbon dioxide 1% argon

[@SVImpavidus]

Because the diagram they give is wrong. We do not breathe pure oxygen. You need to watch and listen better. There is a reason God gave you two ears and two eyes but only one mouth😘

[@glennedwards1449]

The title is very disappointing

[@SVImpavidus]

Ha Ha Sail Safe mate. Ant, Cid & the pooch crew.

[@omidn2876]

Not safe

[@SVImpavidus]

And your in depth explanation and various qualifications to make the comment are ?