Why did cleo's mom break up with dad in h2o just add water?

In "H2O: Just Add Water," Cleo's mom broke up with Cleo's dad due to his frequent absences and inability to commit to the family. The separation reflects deeper issues in their relationship, such as differing priorities and Cleo's dad's focus on work over family life. This breakup plays a role in shaping Cleo's character and her feelings about relationships throughout the series.