OCTOS and Alternate Air Sources** WATCH BEFORE YOU DIVE 

When I learned to dive there were no BCDs, we all had ABLJs and octopus rigs were rare as hens teeth. We'd heard about them but nobody had seen one :-). Buddy breathing was an essential skill we all trained for in the pool. I thought Octopus rigs were standard these days. We didn't buddy breathe like you show. We were side by side in a huddle, each diver had one hand on the regulator and you'd both pass together side to side with nobody letting go of the reg.

Great job, covered all the points I could think of.

Do yourself a favor use a side exhaust reg like the Mares MV

Good video but I will stick to my pony tank and a redundant gas supply.