| ERD is well worth it, however you will have to do longer than 15 min of Deco on the course.
20 min of deco will generally cut to about 15 min after a gas switch, however ERD is more about redundancy and planning than just running a deco stop.
If you only want to do that long you may as well stick to the Adv Nitrox qualification. I personally do up to about 15 min on backgas on my 15L
Why do you need to buy a personal filter and analyser? Thats all done at the shop and no need for your own.
__________________ Paul Oliver Canterbury Divers DUE - Dover Underwater Explorers
2 Rules - 1. You books you pays. 2. Always return to the shot 
Last edited by Paul Oliver : 28-02-08 at 11:04 PM.
|