"How much weight do I need?" "Should I take one more kilo to be sure?", "how do I know when I can shed one more weight from my belt?".
These are very common questions asked to dive professionals all over the world. 

​Good buoyancy control is a crucial part of diving which allows you to dive safely, while avoid damaging the reef or your equipment. When properly weighted, you will consume less air, and generally enjoy your dive more.
Although mastering this art requires time and practice, a very good place to start is with appropriate weighting!

One of the most common injuries while diving is a painful Middle Ear barotrauma, I’m sure you all felt a squeeze in your ears, even when only snorkeling and trying to go a few centimeters below the surface without equalizing, while diving, your ear are subject to the pressure around you and this squeeze can become very painful and cause serious permanent damage to your ear.

As you might know, pressure increase when going deeper below the surface. Your middle ear is a dead air space, connected to the back of your throat by the normally closed Eustachian canals, if you fail to fill up this space with air when the pressure around you increases (this is called equalizing) this is what’s happening: