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Old 04-29-2018, 02:28 PM   #41
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Scuba is much safer than walking across the street, but there are risks are others have noted if you plan on going deeper. I have a good friend who walks with a cane due to a diving incident 30 years ago. Personally, I am in the non compressed air camp. I know a lot of people who also free dive, and no one has passed out, or "had to be saved" but the people I know are trained athletes and worked up to it. There are inherent risks involved when not on the couch eating chips.
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Old 04-29-2018, 02:29 PM   #42
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I had a Hooka and never used it because of the one risk not yet mentioned. The air you breathe is ONLY as good as what the Hooka sucks in. Normally not a problem.....unless you are near other boats with running engines or your Gen set is running...or...the compressor leaks oil into the air it compresses........or? With bottled air, from a certified shop, you know what you are breathing.
True also. But, numerous cases of bad air from certified scuba vendors. I've had a bad air fill (in the islands) via a shop and via a portable compressor, and a bad nitrox fill from a domestic shop; they gave me a 20% helium mix instead of a 32% nitrox mix. That would have resulted in a DCS hit, if I didn't test the mix before I left the shop.

All told, these risks are small, compared to the underwater stupid human tricks that are done...
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Old 04-29-2018, 02:32 PM   #43
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Hooka or SCUBA diving or free diving, the key requirements and recommendations are common sense, know your limits and do not exceed your limits.
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Old 04-29-2018, 02:39 PM   #44
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You may have to open any tanks when you cross an international border for a tank inspection. I know that we left our tanks here when we went to the Bahamas since it would take longer to clear through security and require a scuba place to seal it back up and pressurize them.

Get certified for Scuba even if you use hooka
I've had US CBP make me turn tanks upside down and let out some gas to see if anything unusual happened. But, that was by private plane. DOT and FAA say no-go on commercial passenger planes. I have had numerous Bahamian customs officers stumble over a dozen tanks on board boats and never mentioned anything about them. Including 250cf tanks.
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Old 04-29-2018, 02:44 PM   #45
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For those of you with Hooka's....can you use them to fill a tank ?
No not even close enough presure
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Old 04-30-2018, 05:43 AM   #46
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Apologize for lack of knowledge but isn't there something in-between scuba and hooka? A small bottle of air used for short stays in the water? Seems I remember seeing an ad or picture of something like that?
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Old 04-30-2018, 06:29 AM   #47
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Apologize for lack of knowledge but isn't there something in-between scuba and hooka? A small bottle of air used for short stays in the water? Seems I remember seeing an ad or picture of something like that?
Pony tank and then, there is the Spare Air.
The Spare Air has a built in regulator and provides ONE breath, last resort, end to the line.
I think the pony tank, with standard regulatory and provides a supposed 15 minutes of air.
Then, I think, a little bit larger tank for 30 minutes with a standard regulatory.
In reality, all times are approximate based upon the individual.
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Old 04-30-2018, 07:08 AM   #48
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In shallow water the spare aire would give you a few minutes but you'd need to have a regular tank to fill it from, and if you're going to buy a real tank....you might as well get a regulator and use that. The cost would be less, and you'd get more time.
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Old 04-30-2018, 07:39 AM   #49
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In shallow water the spare aire would give you a few minutes but you'd need to have a regular tank to fill it from, and if you're going to buy a real tank....you might as well get a regulator and use that. The cost would be less, and you'd get more time.
If I recall correctly, the Spare Air is a 'throw away' because it cant be hydroed.
Of course if the owner refills the Spare Air from a larger tank, no one will know. LOL

I have seen pictures of guys with 3 full size tanks on their back and a pony tank horizontally mount either under the 3 tanks or on their chest. On land, that is more weight thank I can carry in 5 trips. Underwater, perhaps no need for a weight belt. LOL Macho, macho man, I wanna be a macho man.
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Old 04-30-2018, 08:56 AM   #50
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The older spare air's supposedly didn't need a hydro as they were only 1800psi, but the new ones are similar to a normla tank ( 3000psi). Visual every year, hydro every 5.

Those guys with multiple tanks are usually doing very technical diving, with a different breathing mixture in each tank. I believe an aluminum tank is only 4 pounds negatively bouyant when full, and is actually bouyant when emtpy. Those multi tank set ups are cumbersome but not heavy underwater, and with a little air in your drysuit/BC you're neutral.
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Old 04-30-2018, 11:48 AM   #51
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Apologize for lack of knowledge but isn't there something in-between scuba and hooka? A small bottle of air used for short stays in the water? Seems I remember seeing an ad or picture of something like that?
If you're going to be breathing high pressure air, which is anything other than a snorkel, you should have proper training.

The only difference between a large tank and a small tank is the length of time you can spend underwater. It is still SCUBA (Self Contained Underwater Breathing Apparatus).
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Old 05-01-2018, 08:51 PM   #52
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well....with the small tanks you don't have to worry about the no decompression limits as much, as you don't have enough air to exceed them.
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