Replacing the filter is simple. There is no need to take apart the filter housing and clear water reservoir to replace the filter. Remove the new filter from the wrapper and soak in water to remove air and ensure flow. To properly soak, fully submerge it upright for 10 minutes. While the filter is submerged, it should be shifted at an angle from side to side until no more air bubbles exit the top of the filter. When the filter is properly wetted out, it should barely float on the water surface. This first soaking will rinse any loose carbon particles and help speed the flow of filtering. Once the filter has been properly soaked, press the filter firmly into place in the filter housing in your Water Fall stand.