Scuba tanks are your surrogate lungs while you are swimming through coral reefs, shipwrecks and marine habitats. The term “it’s as easy as breathing” does not apply when you have pillar valves, o-rings and pressure gauges. You needn’t worry about the mechanics behind your scuba tank, since this will all be explained by the time you complete your diving courses. However, purchasing your first tank is a big investment and should be done wisely.

While buoyancy seems like a simple concept (we add air to our BCD, inhale and float along at what is called “neutral buoyancy”), some novice divers have a hard time maintaining their depth and are constantly fidgeting with the valves and hoses. Sometimes just having the proper tank for your particular diving trip can be a huge help.

There are two main materials for scuba tanks. The first one is aluminum, which is popular among older divers for its light weight and easy transport. Technical divers, warm water reef swimmers and beginners take to the aluminum scuba tanks, which are far less expensive than steel tanks. The advanced diver may shy away from aluminum because these tanks carry half the lifespan and can dent or get stripped at the regulator hookup spot.

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