When one tank isn't enough. Having two tanks - one on each of your sides while diving will give you redundancy, more air to breathe underwater which also means you can have more time underwater during your dives.
On this course you will learn how effortless it can be to find a flawless trim and a better balance with new gear, and why it makes sense to have redundancy with doubled air delivery systems. You will also learn to finetune the sidemount set to your body dimensions.
The benefits of sidemount diving compared to the classical recreational scuba gear are countless: