The appearance of brown algae in an aquarium is most often blamed on silicates in the tank water. Just like SPS corals that require calcium to grow, diatoms require silicates to grow. However, there are many other factors that cause brown algae and I believe the excess silicates story is way overplayed.
A U.S. magistrate judge is a judicial officer of the district court and is appointed by majority vote of the active district judges of the court to exercise jurisdiction over matters assigned by statute as well as those delegated by the district judges. The number of magistrate judge positions is determined by the Judicial Conference of the United States, based on recommendations of the respective district courts, the judicial councils of the circuits, and the Director of the Administrative ...
In United States district courts with at least two judges, the chief judge has certain administrative responsibilities, including presiding over some meetings of the judges. The chief judge remains an active judge of the court hearing and deciding cases, but may take on a reduced caseload to perform administrative tasks.