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no only professional level certs get numbers DM's and above.

Wrong! Just plain wrong.:shakehead: $$$ Has nothing to do with ones ability to scuba dive. People with false information who spout it out as truth are more dangerous than the diver that knows he/she knows nothing. One tandem jump and now you are the expert??? By the way the SERE trainers are...

You absolutly cannot put air into a nitrox tank with the big green stickers on it per the law because it is a different classification of gas than air. Ask any well educated PSI inspector. PSI also just requires that the tanks be labeled.

A little more info on them. They state that is is industry standard for the bands but I dont remember seeing a book with such title. Then they try the old PADI requires it. Well I also dont remember PADI being in the tank cert bussiness. I know that is what they teach in their nitrox class but...

You have no idea what my experience is. I dont claim to know what yours is. Nor do I claim to know how narked you are at what depth,but I do know that you are narked @ 100ft no if's about it. So if you dont want people to disagree with you dont post your nonscientific theorys. The good old I...

You are narked at 100ft no matter what you may beleive. Now to what extent varies. So for the slow, He reduces narcosis. You make smarter and faster decisions when you can think clearly. To think that you are less narked on 32% than air at the same depth is just dumb. So when you are at 100ft...

Gas planning yes. The He statements are both wrong, especially the one about He and deco.:shakehead: Doing a deco dive properly does not mean having/requiring He in your mix. Meng.....To clarify, going into deco when diving @ 100ft and below you should have He in your mix unless, Your...

In my opinion any speciality class offered by PADI is a waste of money and time. Why? Because all you are really paying for is an instructor to baby sit you while you get more diving experience. I am assuming that you are AOW so how does getting a Deep speciality open up deeper dives? You are...

Yes was referring to dives with the first gas switch at 70ft. On dives were the switch takes place at 120 then you would meet them there and have the correct mix in your tanks. Going back to the surface to let the boat know things are good, just keeps the boat in the loop. I see them as a...

Here is my comments from a safety diver. In regards to a dive with 2 deco gasses. I disagree that they should be on the same mix as the team. They should be on 32% and meet them at their first gas switch.70 ft. Once everyone is ok go back up and tell the boat if there is one. Then proceed back...

Finger spools come in various lengths. 50ft,75,100,125,150 you get the idea. For the regular recreational diver a 50ft spool would be just fine. You can wait and shoot it at your safety stop. You want the center hole big enough that your fingers can fit inside of it so you can hold it when...

New divers have such little experience that they really should find someone to mentor them. The instructor plays an important roll in educating them and providing them the knowledge they need to help one another. As we know some are better than others.Instructor should tell there students that...

Asuming that you are shooting it to the surface with a spool no problem. However not all SMB's have an OPV. I wouldnt buy one that didnt however.

Good point. Didnt even consider that. Maybe the OP could elaborate for us a little.

The concern is only the first stage since it receives the nitrox at a high preasure. Check with the manufacture on that or in your manual. The 2nd stage doesnot need any special service for nitrox. Your tanks will need to be nitrox cleaned eitherway. That is a $$$ maker for shops,But that is...

A few things to think about. If you are OOA, do you really need to complicate things by shooting a bag? If you are not diving a long hose then the other diver will be pretty close with a standard 40in octo. Increasing the potential for a tangle when the bag gets shot. The 4ft one is good if you...

The more practice you have with line,shooting bags,sharing air,no mask work,simulating lost vis,doubles,and being able to hold your stops on a line without hanging on the line the better. Go do ascent drills then add stage bottles and do everything again.Find a buddy to help you.

First there is no troll. I just dont post very often. My experience level is tri 1 as well as divemaster. With that being said ,those in itself don't mean anything about my skills. I have been there before with your buddies running around the parking lot looking at other divers gear trying to...

Do your minimum standards include your buddies ability to help you underwater? I seriously question your abilty to get me to the surface in my doubles and to shore with your doubles on. That is a tremendous amount of gear and you are a petite thing. What about you picking a buddy that has a high...

I prefer NAUI. Their encouragement to teach beyond the standards and educate their diver to the "why" of things not just the how. Their Master diver and leaadership classes are superior.Knowledge based as opposed to specialty based. However a great instructor is priceless no matter which agency...