Yoyoguy
Contributor
All I was just thinking of a situation that was never explained to me before. I am deep diver and nitrox certified. Let's say for example Im going to do a nitrox dive to 130ft on 28%. On my dive computer this gives me a NDL of 11 minutes. Now whenever I dive deep past 75ft I typically bring a pony with me. The pony I have is always filled with air. So let's say for example we are at 130ft and approaching our NDL when something goes wrong such as complete regulator failure or free flow or whatever causes you to switch to pony. Now let's pretend you calmly switch over to your pony which is a 40cuft so you have plenty of gas to make a safe ascent. Should you then switch your dive computer to the second gas setting which let's say was set to air and then safely make your ascent. This way your computer keeps calculating things appropriately? I honestly never really gave it a thought that my pony is never filled with the same mix as my back gas is on nitrox dives. Please don't flame me...just looking at honest answers here.