My ex and I currently have 50/50 joint physical and legal custody. We divorced just a few months ago and during our mediation I agreed to no child support in order to get everything over with as it was a very volatile agreement process. He currently makes almost twice what I do. I am not overly concerned with the issue yet but as I foresee us back in court for other custody matters, I wanted to get an idea of how this works should I ever try to have the child support agreement modified. We are in NV as I am sure that plays a part. What constitutes a review or modification of the child support obligations? Does there need to be a significant change in circumstances or one of our employments?