Extended rec diving as intro to tec

[Diver0001]

Knowing that Adv Nitrox & Deco is really an introduction to tec, how are things like valvvle drills etc going to be affected by this configuration?

In IANTD you wouldn't be able to take the course with a K valve but you can get away with taking the course using a single tank like a 120 with a Y valve. It makes the valve drills a little harder but they can be done.

R..

 

[AndyNZ]

Thanks, guys. Bottom time on a single isn't going to be too much of an issue - at 35m (110' or so) my dives are nearly always ended by NDL, not air. If I take the course, it's also going to be 1:1.

If I can borrow a twin set up then I probably will, with a view to buying later.