Welcome guest, is this your first visit?
Member
Discoveries
 
Page 4 of 4 FirstFirst ... 234
Results 46 to 58 of 58
Like Tree50Likes

Thread: Difference between gas mixes

« Prev Thread | Next Thread »
  1. #46
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks
    Back on thread topic Mike, do you have your Nitrox certificate?
    Follow Your Dreams.........I did.

  2. #47
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Quote Originally Posted by SADS 669 View Post
    Back on thread topic Mike, do you have your Nitrox certificate?
    No. But I'm going to take the course very soon. From what I understand there are no dives required, only classroom and written exam. I've been swimming a lot and I dropped 25 lbs, so hopefully my air consumption will improve.

    I'm also thinking about going for a Rescue cert.
    SADS 669 likes this.
    "Today's the day!" - Mel Fisher

  3. #48
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks
    If you decide to do the rescue cert you will need to be in good shape, keep dropping the pounds and work on towing and getting the best out of your fin action, from the hip not the knee
    Boatlode likes this.
    Follow Your Dreams.........I did.

  4. #49
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Quote Originally Posted by SADS 669 View Post
    If you decide to do the rescue cert you will need to be in good shape, keep dropping the pounds and work on towing and getting the best out of your fin action, from the hip not the knee
    Yes. I want to drop another 20. I swim with full footed fins that have much less thrust than the Jet Fins I use for diving, so I have to kick more.
    SADS 669 likes this.
    "Today's the day!" - Mel Fisher

  5. #50
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks

    Difference between gas mixes

    What Scuba tank mixes do Scuba Divers use? ( Dive mag article)
    Most divers use scuba tanks filled with simple compressed air (filtered and dehumidified). This is safe and standard within recreational diving limits – breathing other gasses or exceeding depth/time limits requires the use of specialised gas mixtures: primarily Nitrox, Trimix and oxygen.
    What is Nitrox?

    Click image for larger version. 

Name:	ImageUploadedByTreasureNet.com1515942181.722186.jpg 
Views:	2 
Size:	176.4 KB 
ID:	1536750

    Nitrox, also known as ‘Enriched Air’, is a blended gas consisting of pure nitrogen and oxygen. The air we breathe normally is ~21% oxygen and ~79% nitrogen (with other trace gasses mixed in); Nitrox (generally) has an oxygen percentage between 22 and 40%.
    Recreationally, diving with Enriched Air Nitrox allows longer no-decompression limits (although it restricts maximum diving depth due to oxygen toxicity) by reducing the amount of nitrogen your body absorbs, thereby reducing relative risk of decompression sickness vs comparable dives using scuba tanks filled with air.
    Diving with Enriched Air Nitrox (EANx) requires special safety training, a scuba tank gas analyser and a scuba tank fill location with a compressor (and gas blender) capable of both producing and ascertaining the desired gas mixture.

    What is Trimix?

    Trimix is a mixture of 3 gases (nitrogen, oxygen and helium) used to increase depth limits and/or dive times. Whatever its percentages, this scuba tank gas mixture is exclusive to technical (decompression) diving: recreational divers do not use Trimix.
    Scuba tank fill locations with Trimix-capable compressors must use a certified gas blender to prepare the gas mixture.
    What is Heliox?

    Click image for larger version. 

Name:	ImageUploadedByTreasureNet.com1515942233.326483.jpg 
Views:	2 
Size:	216.9 KB 
ID:	1536751

    Heliox is a mixture of helium and oxygen used by technical divers on very deep/long decompression dives. It is not used by recreational divers.

    Can you fill your tank with pure oxygen?

    No! Oxygen becomes rapidly toxic at depth below 33 ft (20 ft for safety) – prolonged exposure to pure oxygen below a few metres can kill you. It is not an appropriate scuba tank gas mixture. Technical divers use pure oxygen on carefully-calculated decompression dives, but this is beyond the scope of recreational diving and should not be attempted. Oxygen is also highly reactive and can make other substances flammable. Safety training is necessary to work with pure oxygen.
    Last edited by SADS 669; Jan 14, 2018 at 10:08 AM.
    Boatlode and MPH200 like this.
    Follow Your Dreams.........I did.

  6. #51
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Hey Kev, how deep have you been in that Blue Hole near you?
    "Today's the day!" - Mel Fisher

  7. #52
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks

    Difference between gas mixes

    250.....gets a bit dim after that.....you have to go to the drop off to go deeper with decent light otherwise it’s just like a very deep night dive...
    Last edited by SADS 669; Jan 14, 2018 at 01:01 PM.
    Boatlode likes this.
    Follow Your Dreams.........I did.

  8. #53
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Quote Originally Posted by SADS 669 View Post
    250.....gets a bit dim after that.....you have to go to the drop off to go deeper with decent light otherwise it’s just like a very deep night dive...
    Did you feel any narcosis? The deepest I've ever been was 150 in Bonaire, and that was when I was young and stupid. But I never experienced narcosis.
    "Today's the day!" - Mel Fisher

  9. #54
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks

    Difference between gas mixes

    I start to feel a bit about 180 ( head feels warm ) then it progressively gets more noticeable as i go deeper.

    At 180 I go into “Rote Mode” which is a rote of checking , How’s buddy, ( if I have one) air left, depth presently at, time gone, time left, back to checking buddy etc.......unless you get ultra disciplined at that depth you can easily let the narcotic effect get you in trouble, it does feel really good......

    Don’t forget Mike, I used to take guests at Small hope bay Lodge in Andros once or twice a week to 185 ( their signature dive) onto a sandy ledge for a couple of years, so I built up a tolerance. I do know people who feel narked at 150......
    Last edited by SADS 669; Jan 14, 2018 at 02:55 PM.
    AARC likes this.
    Follow Your Dreams.........I did.

  10. #55
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Quote Originally Posted by SADS 669 View Post
    I start to feel a bit about 180 ( head feels warm ) then it progressively gets more noticeable as i go deeper.

    At 180 I go into “Rote Mode” which is a rote of checking , How’s buddy, ( if I have one) air left, depth presently at, time gone, time left, back to checking buddy etc.......unless you get ultra disciplined at that depth you can easily let the narcotic effect get you in trouble, it does feel really good......

    Don’t forget Mike, I used to take guests at Small hope bay Lodge in Andros once or twice a week to 185 ( their signature dive) onto a sandy ledge for a couple of years, so I built up a tolerance. I do know people who feel narked at 150......
    Wow, that's scary. I remember reading in Shadow Divers that they started hearing "jungle drums" in their head that got louder as they went deeper.
    SADS 669 likes this.
    "Today's the day!" - Mel Fisher

  11. #56
    bs
    Ex Military

    Jan 2013
    Long Island, Bahamas
    Tesoro Sand Shark....Aqua pulse 1B
    2,323
    3202 times
    Shipwrecks

    Difference between gas mixes

    There is a huge difference between my warm clear water deep dives and their very cold dark scary Atlantic diving.....

    The Nitrogen narcotic demons really work on your brain as the surrounding environment gets tougher or more challenging....
    Last edited by SADS 669; Jan 15, 2018 at 08:09 AM.
    Jason in Enid likes this.
    Follow Your Dreams.........I did.

  12. #57
    Charter Member
    us
    Mar 2015
    Wisconsin
    Tesoro Tigershark freshwater...Excaliber 1000 Bluetube
    448
    716 times
    Shipwrecks
    Quote Originally Posted by SADS 669 View Post
    There is a huge difference between my deep warm clear water deep dives and their very cold dark scary Atlantic diving.....

    The demons really work on your brain as the surrounding environment gets tougher or more challenging....
    Boy ain't THAT the truth..... make no mistake about it....cold, dark, and deep can really bring out the ghosts....

    ag

  13. #58
    us
    Stickmarsh Jedi Master

    Mar 2014
    Florida Treasure Coast
    Tesoro Sand Shark...... Atomic SV2 snorkel...... Scubapro Jet Fins................... Mares Puck dive computer....... Sherwood Silhouette BCD....... Poseidon Cyklon 300 regulator...
    1,251
    1172 times
    Beach and Shallow Water Hunting
    Quote Originally Posted by SADS 669 View Post
    There is a huge difference between my deep warm clear water deep dives and their very cold dark scary Atlantic diving.....

    The demons really work on your brain as the surrounding environment gets tougher or more challenging....
    Quote Originally Posted by agflit View Post
    Boy ain't THAT the truth..... make no mistake about it....cold, dark, and deep can really bring out the ghosts....

    ag
    I read Gary Gentile's book Deep Dark And Dangerous about diving the Andrea Doria. Not for me.
    "Today's the day!" - Mel Fisher

 

 
Page 4 of 4 FirstFirst ... 234

Remove Ads

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. More mixes...
    By drizzlermibs in forum Marbles
    Replies: 1
    Last Post: Jan 16, 2016, 04:06 PM
  2. What is the difference between the F70 and the F70 Pro?
    By mineralized_miner in forum Fisher Research Labs
    Replies: 3
    Last Post: Jan 29, 2014, 11:31 AM
  3. Whats the difference
    By Sandigger2 in forum Comedy Central
    Replies: 1
    Last Post: Dec 10, 2013, 04:00 PM
  4. Replies: 9
    Last Post: Aug 03, 2011, 07:01 PM
  5. Wow, What a Difference!
    By Nana40 in forum Today's Finds!
    Replies: 40
    Last Post: May 27, 2009, 07:22 PM
Powered by vBadvanced CMPS v4.3.0