The outside pool at the Pella Aquatic Center faced some mechanical difficulties after opening on Memorial Day. The outdoor pool had problems with its filter, which City Administrator Mike Nardini says can be a common problem with pools over summer. The filter issue has been repaired and the pool will open dependent on the weather. The Aquatic Center warns the community that the weather forecast indicates that there may be weather which causes the pool to remain closed. The pool does not open when there is a potential for severe weather or if the temperature is below 70 degrees.