Filters are not designed to be run dry, and it can damage them to do so. Most filters should be quiet; I consider splashing to be different, and mostly a matter of water level. If a filter is making noise, try taking apart the pump (powerhead) and cleaning the impeller. Biofilm build up, gravel, sand, ect can get into the impeller chamber and cause noise. This also can damage the impeller, making it spin off-center.