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have more energy after each dive. More oxygen = more energy. Jim Now, could someone complete a 2nd dive for me after you have had lunch? Thank you for any and all help. Brice

Brice wrote ... <snip Depends upon the type of diving that you are wanting to do... It will give you more time for shallow dives as long as you stay above the MOD for the mix you're diving due to higher PP02 for a given depth... Some people dive it with air tables (or air computer) and get an extra safety margin on their dives... On the other hand, you don't get narced as much and isn't that what we really started diving for anyway? <grin

to be just a Vacation Diver, this is not something I will be doing locally.  Most of my equipment purchasing days are still infront of me and will be comming out of my vacation budget.  So, I am currently trying to find out why NOT Nitrox??? I thought I was closing in on an answer here at rec.scuba untill I looked down at read that most of the negative info was over 12 years old.  Also it looked like alot of the problems involved everyday divers, extreme divers, and maybe some working divers. Why not just plan on making the rest of my Dives with Nitrox?  I take about 2 vacations a year and am planning on turning them into dive vacations.  Diving 3-5 days per week twice a day.  Cost is not a problem as this will be out of my vacation budget.  Why not just Sign up for a Nitrox cert. class and never look back. I found this in another thread: this is direct from my NAUI ean dive tables. normal air 90fsw = 25 min. with no deco stop ean 32     90fsw = 40 min. with no deco stop ean 36     90fsw = 50 min. with no deco stop This is why those of us who dive nitrox do so. You get much better bottem time for only a few dollers more per tank. And for me I always seem to have more energy after each dive. More oxygen = more energy. Jim Now, could someone complete a 2nd dive for me after you have had lunch? Thank you for any and all help. Brice Your air consumption will remain the same on Nitrox as on air. You need to ask yourself if you can normally dive for 40/50 minutes on one tank using air. If not, the Nitrox will be of little benefit.

I am basically just starting out.(2yrs of vacation diving)  I am going to be just a Vacation Diver, this is not something I will be doing locally.  Most of my equipment purchasing days are still infront of me and will be comming out of my vacation budget.  So, I am currently trying to find out why NOT Nitrox??? A better question might be Why not nitrox yet.  Here's some things to think about: Anti 1. Nitrox is more expensive.  If you don't have a reason to use it, it's a waste of money. 2. Nitrox increases one of your a risk factors, CNS Oxygen toxicity within the most common recreational diving limit, 130 fsw.  To use nitrox safely, you have to ensure the gas you plan to use is safe at the maximum depth you plan to dive.  There's a toxicity limit for air too, but it's well beyond the norm for recreational diving.  It's not a big deal to do, but it's important to get it right. 3. If all that is available in your area is partial pressure blending, you're going to have to get your tanks cleaned to O2 service standards at each visual.  This increased cost a bit.  If you have a premix source, as I do, this is a moot point. 4. Most resort diving charters time their dives, depths and surface intervals to air on tables.  If you're diving with somebody like this, there's little or no point in using nitrox.  The operator won't let you take advantage of it anyway. Pro 1. When you begin to run out of dive time before you run out of gas, it's time to consider nitrox.  It adds no deco time to your dive.  A substantial portion of the people in this group have low enough consumption rates that they can reach deco status on a single dive, with a single 80 cubic foot tank, on the first dive.  Most new divers can't.  Some never do.  Then again, some get bigger tanks to be able to stay with their lower consumption friends. 2. If you're going to be doing a lot of repetitive diving, you may find nitrox to be useful.  While most people can't get into deco on a first dive with air, pretty much everybody can on a second one.  With nitrox, you can spend more time underwater, with shorter surface intervals, without increased risk of DCS.  It's nice to be able to get the most for all the money you paid to get to a dive site you like. 3. If you're diving with somebody that will let you do whatever your certification, abilities and/or equipment allows, you're really going to want nitrox.  It's no fun sitting on a pitching boat while everybody else is still diving, dive after dive, after dive. 4. If you ever get into really intense diving, like the 6-7 dive a day trips I take each year, nitrox really comes into its own.  Diving between 65 and 80 feet, I have a lot more flexibility on whether I'll be near the bottom, mid water or near the top.  Sometimes that flexibility translates to food on the table . . . lobster, for example. I'm sold on nitrox.  You may never care that much.   The bottom line for me is, it's worth the money and slight bit more effort.  YMMV. Lee

Your air consumption will remain the same on Nitrox as on air. You need to ask yourself if you can normally dive for 40/50 minutes on one tank using air. If not, the Nitrox will be of little benefit. It's not 40/50 minutes on one tank unless you're only planning one dive.  If you are planning two or more, nitrox will either increase your total dive time or decrease your necessary surface interval times.  Both translate to more time underwater. Lee