I just put my pool in this summer (completed on 8/1/06). There were traces of sand coming into the pool at the returns from the beginning. However, in the past week there is a LOT more sand coming through the returns. It is definiely sand and not silt. Any idea what might be wrong? I subed out all the work myself on my pool but I'm sure there is still warranty on everything. Should I call my plumber out?

Thanks,

Brian