deco diving

So I went down to Key West for the very first time two years ago to dive the Vandenberg several days in a row with my buddy who convinced be to make the long treck. Long story short he ended up bailing on me and I flew down with my recreational gear. We were signed up with Captains Corner, a...

So I'm moving into the realm of deco diving, just finished Tek-40 and starting to work on Tek-45.. Just curious how comfortable everyone is with filling a 3000 psi cylinder with 02 that gets questionable above 2250 psi?? Back in 2011(ish) when I was working at a dive shop in Tampa there was a...

Nitrox and Scuba Gasses - Full Version I finally put this to video for posterity. A nitrox workshop plus alpha! Get a full overview of nitrox and all scuba gases and how they are used in scuba and how they relate to each other. An overview of how and why recreational divers vary gas mixes to...

Has anyone come across the actual algorithm that can be used in MS Excel?

I am looking to buy a used shearwater computer, any advice? What is the difference between the 1 and 2? Is the predator good? noticed it does not have LED lighting. will need it for open circuit Technical diving, decompression diving. Looking for something in decent condition.