Trimix Prerequisite

[Packhorse]

You can read many dicussions concerning the need (or lack of need) of extended range.

Where?

Anyway you can avoid using but at the same time obtaining the depths that you need is a good thing in my book. Just an opinion though.

David

How?

 

[karstdvr]

A friend told me that if you plan to do a lot of deep diving a rebreather is less expensive in the long run.

Inorder to get a cost saving it is going to take quite awhile. After the initial cost of the unit 6-9K,then there is training which is at least 1K. Operation of the unit will be costly for sorbant etc,but probably a little cheaper than OC. Most of my trimix OC dives don't cost me a lot of money. If you are willing to dedicate a set of tanks to trimix,and constantly top on top of this set,you will quickly pay for the set of dedicated tanks in the cost of dumping trimix and remixing. Last dive I did I used 1200 psi in double 104s of 21/30,and my cost to top up was $23.00,plus I used 2000psi in an al80,and it cost $13.00-$36 for the dive wasn't too bad. Conversely,if I dumped my set of 104s completely and refilled,it would cost $71.00. I saved $48 each time by dedicating a set of tanks,after 12-15 dives I have paid for the tanks. Now I have a set of tanks dedicated for deep and shallow trimix,and have paid for these tanks twice over.

 

[dandrian]

First, I have read multiple posts on this site discussing the need or lack of need for extended range. As usual, doing a search only yielded a few mentions. I am not a "DEEP AIR" advocate in that I think the deep air is the only way to do it. I am not tri-mix certified yet but like others there are some wrecks below 150ft. that I want to get to.

What I am a big ADVOCATE of is knowledge......... and I believe that by taking an Extended Range course and not skipping from Deco Procedures to Trimix you will increase your knowledge, understanding, and to some degree your safety while diving. So often on this site you read posts of people "thinking of going tech" etc. and I think about the only universal agreement that you will ever read is that as you progress though your diving career that you take it slowly, get lots of education, and don't be in too much of a hurry to move on to the next level of diving.

In my first post what I was trying to get at was that when you plan a dive, you first look at depth and enviroment. Then consider what it is you wish to accomplish on the dive and how long it will take to do those things. Now you can consider options for the gasses you will use for this plan. If a plan can safely be formulated that uses an air mixture instead of a trimix, that is certainly something to consider.

Basically, there is a time and a place for everything and the only way you will know when that time is if you properly educate yourself. So don't "skip" anything.

David

 

[nadwidny]

If a plan can safely be formulated that uses an air mixture instead of a trimix, that is certainly something to consider.

Given the context of this forum; there is no plan that safely uses an air mixture instead of trimix.

I am not tri-mix certified ...

Remember that next time before you hit the send button. I would think it's pretty much a given that one should have a half-azzed idea what they are talking about before they give advice.

 

[Azza]

and I believe that by taking an Extended Range course and not skipping from Deco Procedures to Trimix you will increase your knowledge, understanding, and to some degree your safety while diving.

I have to say that I found the Extended Range course rather average. Certainly didnt learn much on it (that I can remember).
However I do dive relatively deep air. I don't often let on about this, as I don't like to set a bad example but when an 18/45 mix costs around $350 for a fill, I have no problem with deepish air.
Of course if I lived in a country that had relatively cheap helium, I would use He for sure...be a mug not to.

If you can do the Tri-Mix course then do it. Think of us in high cost He country's.

 

[daniel f aleman]

"Tri Mixing"

BWHAHAHAHAHA!!! *sniffle*

My favorite post of the year, someone forward this thread to NetDoc, please...