Tag Archive: bottom


Sidemount Technical Wreck Diving Subic Bay Philippines

Scuba Diving Tips: Choosing and Using  A Redundant Air Source by Andy Davis, PADI TecRec, ANDI, BSAC and SSI Instructor Pony cylinders are a popular choice amongst divers who seek a redundant form of air supply as a contingency for Out-Of-Air (OOA) emergencies when scuba diving.  There is a lot of debate about when, or [...]