A motion asking the judge to recuse himself or herself is used when the judge can be shown to be biased or have a personal stake in the outcome of the case. Dissatisfaction with a judge's previous ruling is not grounds for a new judge. There may be conflict, and grounds for disqualification, if it can be alleged and shown that the underlying custody case involves the school a child will attend, or which parent will decide the school, and the judge owns one of the potential schools, and the judge may have a financial consequence based on the outcome of the case that he/she is deciding.
This response should not be relied upon as advice. Communication in this forum does not create an attorney client relationship.