I am a full time commercial oilfield diver, ex-Royal Navy and also a certified scuba instructor. I can say that we professionals in professional dive companies would never purchase or use Chinese made dive equipment. The Chinese have manufactured some very poor copies of dive helmets and spare parts - they are dangerous. I have a term for such stuff, NQR - Not Quite Right. It may look right, feel right and work right... and then it fails and you find it was NQR all along. My advice is to avoid these. 🇬🇧🇬🇧🇬🇧
these would also be good to have as backup if your freediving and someone blacks out and sinks to the bottom or gets stuck, you can air to help cut them loose and bring them up
He spends about 33 minutes going on and on about the 25 ft no-decompression hazard while using a set of tanks that might, on a good day, allow you to stay submerged for about 15 minutes. NOTE: the no-decompression limit for 30 ft is about 5 and a half HOURS.
That’s completely incorrect 🤷🏻♂️ And I think you missed the entire point of the video. So either you are a certified diver, which this video doesn’t apply to you, or an uneducated non-certified diver, who will probably get killed or injured due to reckless behavior
@@allthingsrandom8137 I am an experienced certified diver and I get the point: SAFETY for those who have little or no experience with SCUBA. When he talks about ascending slowly, he makes the point, but he doesn’t go far enough. He should have used the time to expand upon the dynamics of air compression and decompression and how all of this impacts the human lungs instead of the obfuscation of the 25 ft no decompression hazard, which is a non-issue using these types of tanks.
So i am a certified diver and am looking at the smaco 2l tank. It looks the most like i am used to with the presure gauze in the usual spot. I wil be using it for snorkling. And it wont replace my proper set. But this would be nice and porteble. Of course the tank will get all the yearly checks and i wont be using no scetchy aircopressors. I have my local dive shop that will fill it with proper air. I love your video and keep up the good work warning the untrained.
as a advanced certified scuba diver......i wonder how many ppl will soon die after buying these dangerous to use without proper training units.......well done video....and i agree with you that ppl will still buy them anyway........the general public with no training are at huge risk to suffer injury and or death using these units with no dive training.......so many of these videos show ppl diving alone with these as well......never dive alone and especially with a unit like this.........and so many other factors that make me worry how many ppl will die with these
world wide .....certified divers can have a proper tank filled by a dive shop with a quality safe compressed air......by presenting a scuba diver certified card.....and quality tanks are inspected ......scuba tour boats and other businesses recognize these diver cards also to go out on dive boats .........then there are some countries that do not require proper training and offer crash courses......dangerous !......now some companies have found a way to offer scuba dive kits such as these where the tanks can be filled on site by the owners.......buying these kits online ......with zero training or any idea of just what they are getting into .......extremely dangerous !!........time will tell how many people end up dead and or injured........and top nations in the world will surely step in and regulate or outright ban such equipment from entering the country i predict ......to protect lives and reduce injuries , costs and risk to emergency first responders also
I personally know of 4 “advanced divers” that died scuba diving. Mostly caves - they were all lawyers. Didn’t know them personally but through work. Where is your data on this? Scuba diving is overall dangerous.
@@DFWRob did you not hear how serious I think these things are? I don’t know how many times in over four videos now I’ve done on this dive equipment where I say this is going to kill someone or it could kill you. The issue is people are going to use them regardless so here are some safety tips to avoid injury. So I’m not sure what the statement is about? Because I mentioned how serious it is and how these things are life-threatening.
@@DFWRob and on another point, scuba diving is overall dangerous, but it’s 100 times more dangerous to go cave diving while scuba. Those are two separate worlds. And I know this as a scuba diver. I would say it’s the equivalent to skydiving and base jumping. Over tenfold have died more base jumping than skydiving yet both have parachutes. Just saying that, I think there needs to be more context
Your video is very intuitive. The main reason I watch this is that I scalloping every year. And I was looking for something to dive and stay undwr the water, even though we are in like 6 to 8 feet of water, which is pretty much a joke for this apparatus. Just wanted to talk thoughts on that.
I appreciate your review on this, and your straight-shooting reviews... Have you considered doing a review on above water air supply systems? I am going to buy one... and likely a parachute tank to go with it.
Yeah, the closest I've ever gotten to diving is Shark Week on the Discovery channel. Very informative video, I must say; almost makes me want to dive...almost.
@@allthingsrandom8137 you have mentioned a 19 liter cylinder a couple of times but I have never seen such a beast. A 10 liter is equal to a 72cu/ft tank so a 19 would be twice that size. Can you clarify this 19 lt thing?
Hello, I've never dived before and you just saved my life because otherwise I would definitely have made a mistake. That was great, thank you..!!!!!!!!!!!!!!!!!! Perfekt
Hey Chase! Thanks for the great video sharing your experience and big plus the safety warnings! The affordability of these tanks sure make me and my kids get excited but all the amateurs must first hear about the dangers - just like you emphasize! The pumping experience was helpful, too. Guess Id use a compressor instead of wasting time and money on the hand pump. One thing to note that idiot you mention might have been right. At least from what basic school program tells us. If you take the formula that describes the resulting force on the scuba tank (up buoyancy force and down weight force) its the difference between density of compressed air inside the tank and water around the tank multiplied by tank volume times g (9.8 m/sec2): F=(P_air-P_water)*Volume*g. So roughly if water is well higher density than compressed air in the tank the resulting force is up. But now between the 1L and 2L tanks what matters is the volume of the tank which is the multiplier in the formula! In other words you get twice the force pulling that tank up when you increase tank volume from 1 litre to 2 litre. I might be wrong somwhere but hopefully not too far :)
I accidently bought two of these .8 Depedu packages from Alibaba they scammed my card. I had decided I did not want this. It's not even a toy, twenty minutes of pumping for three minutes of diving no sense. They took my money and sent me two units. BEWARE OR ALIBABA!!!!!!. I was unpacking one of the units to set it up. Then I watched your video. I put it back in the packing and put it back in the case. Anyone want two cheap units I am in the Philippines.
i think some of these would have value to dry cave explorers, who have either found underwater spots within those caves, or as an emergency air source when the cave floods.
When I was learning how to dive, our class instructor only gave us a mask and a snorkel. He said that freediving is the necessary basic level before you go scuba diving, because you need to learn how to control yourself, how the environment acts on your body and what to consider. Half the class couldn't learn how to equalize underwater, some more quit because they were panicking at depths. Only me and 2 more guys made it through the course out of 26 people. These small tanks are dangerous, because people are primarily and simply dumb.
I really don't think people should use this type of equipment If you really want to experience diving Get certified there is no substitute for certification Although i do know some people that use these death traps for doing light boat maintenance There is No substitute for proper training and yes i really enjoyed this video like all the other fantastic content you share with us Be well my friend and Stay Frosty 👍
Yeah, that’s the thing, people are going to use them no matter what. So might as well at least put something out there That’ll keep them a little safer.
Great video, we live in Egypt and practice freediving and a lot and sometimes we dive. We want to buy exactly this, but you opened my eyes and now I know what not to do. I would definitely make the mistake you pointed out when climbing. So the question is, if I go for a breath to maybe 10m and I want to stay there, can I take it down and start underwater? Or do I just have to start at the surface?
The rule is to never hold your breath ever if you’re going to breathe compressed air underwater. It’s one thing if it’s in case of an emergency it’s another thing if it’s a practice that’s going to be done over and over. You’re better to start breathing at the surface and continue breathing until you reach the surface again.
Thank you very much, it was very enlightening for us because no one here uses it and no one has any information about it. Will there be a video directly on how to use it when you go into the sea?
What would happen if you take breath on surface, exhale at 10m, and continoue to breathe from small tank? I dont see the problem, maybe i dont understand air density but of you dive and breathe from start with bottle, there seems to be no problem..@@allthingsrandom8137
I was wondering when you snorkel/free dive and have to go down, say for a rescue to secure a latch or inspect something and use it just to extend you free dive, would that make sense?
I really think its a good stuff.. but you have to be carefull. If you go alone, i think 2 tanks would be a life savers. But i would get out or hold breath on last 10-15% and went straight out. Could be a fun stuff if you have brains.
It lasts more like 3 mins. You could only reach this 10 minute mark if you were experienced and completely calm. One of your videos recommends pumping to 150 bar (which the video claims is the max pressure for most scuba tanks). Please check my math but .5L of air at 150 bar is around 75 L of gas at the surface. 40 L per min is the rate most divers use to calculate dive time so it’s just not adding up. I would love to hear some feedback on this.
Essentially the .5 will get you about 3 to 4 minutes, the 1 L will get you about eight, and the 2 L will get you about 15 if you are experienced. Between the pressures of 0 feet and about 20 feet underwater.
Regardless of common sense people ARE going to use these tanks and the safety information will likely keep someone from injuring themselves so thank you. As one of those people without common sense, is obeying the 25 foot limit something where surface intervals should be considered in between uses if filling from a larger tank? Or unlikely given the relatively shallow depth?
I wouldn’t be worried about surface intervals, you’re not going deep enough. That’s more strictly for deeper dives where overtime the nitrogen buildup will occur in your body. You’re good at shallow depths
I hope a lot of people considering these tanks will watch this first. The 2 litre does sound like bad news, the smaller ones don't give you as much time to go deep, but are still potentially dangerous. I tried diving once, and had trouble with my ears, so it isn't for me.
so i've probably done 5 or 6 videos on these tanks and how dangerous they are. there is not enough air in the tank for something like a safety stop. I'll give you an example. The .5 L gives you just a few minutes, a waste of time for me, just practice a breath hold. The 1 L gives you maybe 8 minutes, so you should never go deep enough (less than 25 feet is what i've said) for a safety stop to be necessary, or most the time will be spent just re-surfacing. And the 2 L i would never recommend as there is a buoyancy issue. the tank is big enough to have enough weight to really make an issue one you start lightening the tank from breathing, then you have a runaway accent which is no bueno. No my rule of thumb is to never go beyond 25 feet, really 20 feet, and accent as slow as you possibly can. But in reality, these things are very dangerous for people who are not trained.
While you’re breathing compressed air? I would never recommend holding your breath at any depth.. If you are just doing a breath hold, then it doesn’t really matter hold your breath
@allthingsrandom8137 Great explanation man, I was just looking to buy 1L tank and I saw your video, what can you tell me what is the best thing if I am on 750psi or 500psi at 25 feet and it mailfunction what should i do ? How to safely asend to surface ?
If you’re at 500 psi at 25 feet then you still have plenty to slowly make your way to the surface. I would go as slow as possible, continuing to breathe normally. If you have a malfunction and you suddenly don’t have anything. Then what I would do is breathe out very slowly while making your way to the surface. Attempt to exhale everything out of your lungs. Imagine breathing out the word “two” in a continuous manner “twwwwwwwwwwooooooooo” until you reach the surface
![⭐️( ลอยกระทง 2024 ) Ver. แดนซ์ Remix BY [ ดีเจกิต รีมิกซ์ ]](http://i.ytimg.com/vi/rMWOLhgXUHc/mqdefault.jpg)
I am a full time commercial oilfield diver, ex-Royal Navy and also a certified scuba instructor. I can say that we professionals in professional dive companies would never purchase or use Chinese made dive equipment. The Chinese have manufactured some very poor copies of dive helmets and spare parts - they are dangerous.
I have a term for such stuff, NQR - Not Quite Right. It may look right, feel right and work right... and then it fails and you find it was NQR all along.
My advice is to avoid these.
🇬🇧🇬🇧🇬🇧
these would also be good to have as backup if your freediving and someone blacks out and sinks to the bottom or gets stuck, you can air to help cut them loose and bring them up
Good point
if someone blacks out underwater,near zero chance this will help lol
Thank you... I'm that risk taker, great content. Maybe I'll just go get my certification and skip this step.
He spends about 33 minutes going on and on about the 25 ft no-decompression hazard while using a set of tanks that might, on a good day, allow you to stay submerged for about 15 minutes. NOTE: the no-decompression limit for 30 ft is about 5 and a half HOURS.
That’s completely incorrect 🤷🏻♂️
And I think you missed the entire point of the video. So either you are a certified diver, which this video doesn’t apply to you, or an uneducated non-certified diver, who will probably get killed or injured due to reckless behavior
@@allthingsrandom8137 I am an experienced certified diver and I get the point: SAFETY for those who have little or no experience with SCUBA. When he talks about ascending slowly, he makes the point, but he doesn’t go far enough. He should have used the time to expand upon the dynamics of air compression and decompression and how all of this impacts the human lungs instead of the obfuscation of the 25 ft no decompression hazard, which is a non-issue using these types of tanks.
So i am a certified diver and am looking at the smaco 2l tank. It looks the most like i am used to with the presure gauze in the usual spot. I wil be using it for snorkling. And it wont replace my proper set. But this would be nice and porteble. Of course the tank will get all the yearly checks and i wont be using no scetchy aircopressors. I have my local dive shop that will fill it with proper air. I love your video and keep up the good work warning the untrained.
Thanks!
as a advanced certified scuba diver......i wonder how many ppl will soon die after buying these dangerous to use without proper training units.......well done video....and i agree with you that ppl will still buy them anyway........the general public with no training are at huge risk to suffer injury and or death using these units with no dive training.......so many of these videos show ppl diving alone with these as well......never dive alone and especially with a unit like this.........and so many other factors that make me worry how many ppl will die with these
Thanks! And they just keep making bigger tanks. I’ve done the .5, .7, 1 liter, and 2. And Smaco admits to wanting to make a 3. Really dangerous
world wide .....certified divers can have a proper tank filled by a dive shop with a quality safe compressed air......by presenting a scuba diver certified card.....and quality tanks are inspected ......scuba tour boats and other businesses recognize these diver cards also to go out on dive boats .........then there are some countries that do not require proper training and offer crash courses......dangerous !......now some companies have found a way to offer scuba dive kits such as these where the tanks can be filled on site by the owners.......buying these kits online ......with zero training or any idea of just what they are getting into .......extremely dangerous !!........time will tell how many people end up dead and or injured........and top nations in the world will surely step in and regulate or outright ban such equipment from entering the country i predict ......to protect lives and reduce injuries , costs and risk to emergency first responders also
I personally know of 4 “advanced divers” that died scuba diving. Mostly caves - they were all lawyers. Didn’t know them personally but through work.
Where is your data on this? Scuba diving is overall dangerous.
@@DFWRob did you not hear how serious I think these things are? I don’t know how many times in over four videos now I’ve done on this dive equipment where I say this is going to kill someone or it could kill you. The issue is people are going to use them regardless so here are some safety tips to avoid injury.
So I’m not sure what the statement is about? Because I mentioned how serious it is and how these things are life-threatening.
@@DFWRob and on another point, scuba diving is overall dangerous, but it’s 100 times more dangerous to go cave diving while scuba. Those are two separate worlds.
And I know this as a scuba diver. I would say it’s the equivalent to skydiving and base jumping. Over tenfold have died more base jumping than skydiving yet both have parachutes.
Just saying that, I think there needs to be more context
Your video is very intuitive. The main reason I watch this is that I scalloping every year. And I was looking for something to dive and stay undwr the water, even though we are in like 6 to 8 feet of water, which is pretty much a joke for this apparatus.
Just wanted to talk thoughts on that.
What are your thoughts?
Buy a portable hookah
And thanks for the hand pump, I thought it would be like blowing up a balloon.)))))))
It's not dangerous, it's just some sort of natural selection 😊
I appreciate your review on this, and your straight-shooting reviews... Have you considered doing a review on above water air supply systems? I am going to buy one... and likely a parachute tank to go with it.
I love diving so it kinda fit right in. What above water systems should I possibly look at?
Yeah, the closest I've ever gotten to diving is Shark Week on the Discovery channel. Very informative video, I must say; almost makes me want to dive...almost.
LOL
I’m no diver but cool that these exist, didn’t know they made anything like it
Glad you caught this one then, since it goes through the options and links the other videos
@@allthingsrandom8137 you have mentioned a 19 liter cylinder a couple of times but I have never seen such a beast. A 10 liter is equal to a 72cu/ft tank so a 19 would be twice that size. Can you clarify this 19 lt thing?
@@Berkcam th-cam.com/video/QaWeSJ0vvoI/w-d-xo.htmlsi=JuP6pLIQxF7yRBp4
Sometimes the 19 is used as a reserve.
these units should NOT exist
Hello, I've never dived before and you just saved my life because otherwise I would definitely have made a mistake. That was great, thank you..!!!!!!!!!!!!!!!!!! Perfekt
Hey Chase! Thanks for the great video sharing your experience and big plus the safety warnings! The affordability of these tanks sure make me and my kids get excited but all the amateurs must first hear about the dangers - just like you emphasize! The pumping experience was helpful, too. Guess Id use a compressor instead of wasting time and money on the hand pump.
One thing to note that idiot you mention might have been right. At least from what basic school program tells us. If you take the formula that describes the resulting force on the scuba tank (up buoyancy force and down weight force) its the difference between density of compressed air inside the tank and water around the tank multiplied by tank volume times g (9.8 m/sec2): F=(P_air-P_water)*Volume*g. So roughly if water is well higher density than compressed air in the tank the resulting force is up. But now between the 1L and 2L tanks what matters is the volume of the tank which is the multiplier in the formula! In other words you get twice the force pulling that tank up when you increase tank volume from 1 litre to 2 litre. I might be wrong somwhere but hopefully not too far :)
Great points!
I accidently bought two of these .8 Depedu packages from Alibaba they scammed my card. I had decided I did not want this. It's not even a toy, twenty minutes of pumping for three minutes of diving no sense. They took my money and sent me two units. BEWARE OR ALIBABA!!!!!!. I was unpacking one of the units to set it up. Then I watched your video. I put it back in the packing and put it back in the case. Anyone want two cheap units I am in the Philippines.
i think some of these would have value to dry cave explorers, who have either found underwater spots within those caves, or as an emergency air source when the cave floods.
When I was learning how to dive, our class instructor only gave us a mask and a snorkel. He said that freediving is the necessary basic level before you go scuba diving, because you need to learn how to control yourself, how the environment acts on your body and what to consider. Half the class couldn't learn how to equalize underwater, some more quit because they were panicking at depths. Only me and 2 more guys made it through the course out of 26 people. These small tanks are dangerous, because people are primarily and simply dumb.
I really don't think people should use this type of equipment If you really want to experience diving Get certified there is no substitute for certification Although i do know some people that use these death traps for doing light boat maintenance There is No substitute for proper training and yes i really enjoyed this video like all the other fantastic content you share with us Be well my friend and Stay Frosty 👍
Yeah, that’s the thing, people are going to use them no matter what. So might as well at least put something out there That’ll keep them a little safer.
Great video, we live in Egypt and practice freediving and a lot and sometimes we dive. We want to buy exactly this, but you opened my eyes and now I know what not to do. I would definitely make the mistake you pointed out when climbing. So the question is, if I go for a breath to maybe 10m and I want to stay there, can I take it down and start underwater? Or do I just have to start at the surface?
The rule is to never hold your breath ever if you’re going to breathe compressed air underwater. It’s one thing if it’s in case of an emergency it’s another thing if it’s a practice that’s going to be done over and over. You’re better to start breathing at the surface and continue breathing until you reach the surface again.
Thank you very much, it was very enlightening for us because no one here uses it and no one has any information about it. Will there be a video directly on how to use it when you go into the sea?
What would happen if you take breath on surface, exhale at 10m, and continoue to breathe from small tank? I dont see the problem, maybe i dont understand air density but of you dive and breathe from start with bottle, there seems to be no problem..@@allthingsrandom8137
I was wondering when you snorkel/free dive and have to go down, say for a rescue to secure a latch or inspect something and use it just to extend you free dive, would that make sense?
The issue is that once you start breathing compressed air, you can’t just stop. So understand that once it begins, you need to surface still breathing
I really think its a good stuff.. but you have to be carefull. If you go alone, i think 2 tanks would be a life savers. But i would get out or hold breath on last 10-15% and went straight out. Could be a fun stuff if you have brains.
Yes
It lasts more like 3 mins. You could only reach this 10 minute mark if you were experienced and completely calm. One of your videos recommends pumping to 150 bar (which the video claims is the max pressure for most scuba tanks). Please check my math but .5L of air at 150 bar is around 75 L of gas at the surface. 40 L per min is the rate most divers use to calculate dive time so it’s just not adding up.
I would love to hear some feedback on this.
th-cam.com/video/50I3OGvHdMY/w-d-xo.htmlsi=-PXLh4j890mybj4D
Check out this video. I go through the math and breathing times with SAC rates
Essentially the .5 will get you about 3 to 4 minutes, the 1 L will get you about eight, and the 2 L will get you about 15 if you are experienced. Between the pressures of 0 feet and about 20 feet underwater.
Great job defining everything, considering Saftey, human nature/logic, equipment use. you are either an instructor or dive master or should be.
Regardless of common sense people ARE going to use these tanks and the safety information will likely keep someone from injuring themselves so thank you.
As one of those people without common sense, is obeying the 25 foot limit something where surface intervals should be considered in between uses if filling from a larger tank? Or unlikely given the relatively shallow depth?
I wouldn’t be worried about surface intervals, you’re not going deep enough. That’s more strictly for deeper dives where overtime the nitrogen buildup will occur in your body.
You’re good at shallow depths
I hope a lot of people considering these tanks will watch this first. The 2 litre does sound like bad news, the smaller ones don't give you as much time to go deep, but are still potentially dangerous. I tried diving once, and had trouble with my ears, so it isn't for me.
Hey man great video but you forgot to speak about the 3 minutes safety stop. I would like to hear about that
so i've probably done 5 or 6 videos on these tanks and how dangerous they are. there is not enough air in the tank for something like a safety stop.
I'll give you an example. The .5 L gives you just a few minutes, a waste of time for me, just practice a breath hold. The 1 L gives you maybe 8 minutes, so you should never go deep enough (less than 25 feet is what i've said) for a safety stop to be necessary, or most the time will be spent just re-surfacing.
And the 2 L i would never recommend as there is a buoyancy issue. the tank is big enough to have enough weight to really make an issue one you start lightening the tank from breathing, then you have a runaway accent which is no bueno.
No my rule of thumb is to never go beyond 25 feet, really 20 feet, and accent as slow as you possibly can. But in reality, these things are very dangerous for people who are not trained.
Thanks, you changed my mind
If Im on a 15 feet pool and I have weights to keep me at the bottom, can I hold breathe there if am not ascending?
While you’re breathing compressed air? I would never recommend holding your breath at any depth..
If you are just doing a breath hold, then it doesn’t really matter hold your breath
@@allthingsrandom8137 thank you
Thank you for safety instructions Mr ❤
A great video, thanks so much for sharing 👍
Anytime!
SeaC sells a dive watch/computer for $100
I’ll take a look. Thanks!
@allthingsrandom8137 Great explanation man, I was just looking to buy 1L tank and I saw your video, what can you tell me what is the best thing if I am on 750psi or 500psi at 25 feet and it mailfunction what should i do ? How to safely asend to surface ?
If you’re at 500 psi at 25 feet then you still have plenty to slowly make your way to the surface. I would go as slow as possible, continuing to breathe normally.
If you have a malfunction and you suddenly don’t have anything. Then what I would do is breathe out very slowly while making your way to the surface. Attempt to exhale everything out of your lungs. Imagine breathing out the word “two” in a continuous manner “twwwwwwwwwwooooooooo” until you reach the surface
Thank you very much for answer and informations 👍
Dude, calm down... So much frustrations! Haha
I’m defiantly not frustrated… LOL
great vid !
really great video.. just love the smart idiots who think the more air the lighter....🤣🤣
pour de vrai, je reve de nager et faire de la plonger, merci!!
Not much detail or new info. Even playing at 1.75x was boring.
🤷🏻♂️
Twoooooo
Soooo.. these tanks only good for .. shallow , very shallow snorkelling 🤿.. is that correct ??
I won’t go below 25 feet… unless you are trained… gets dangerous and pretty hairy