Two atoms of protium are combined to make deuterium. One atom of deuterium is then combined with one atom of protium to make tritium. Two atoms of tritium are combined to make helium-4, and so on.
When Waterbe fully utilised fusion power for commercial purposes (in the form of Waterbien Fusion), they realised that over ten thousand reactors would have to be constructed to meet Unistarch's massive energy demands. So, Waterbien scientists came up with the theory that if they could create a small scale star, then they would have lots of energy from the reactions produced in the star, energy and iron when the star exploded, and neutronium in the aftermath.
To create the star, Waterbien scientists created a zero gravity environment, and forced several deuterium atoms to come together. Eventually, gravity took control and more deuterium was added, held in place by powerful magnetic fields. There are currently 25 of these reactors on Unistarch , and one in the space exploration outpost. These reactors have a running life of 1500 waterbe years.
This project was more successful than ordinary fusion. It could turn protium into iron and energy with 0.9% efficiency. Though this may not seem much, it means that only 16 million, 454 thousand unglans of seawater would be needed to get enough hydrogen. This is just a drop compared to the vast lakes of Unistarch.