`Olga`:- There seems to be quite a bit of interest in gravel "cleaning" lately Andy: Okay, I meant vacuuming the debris - happy now ? Andy Moore - andy at ascot_u-net.com Treasurer/BBb Tuba Player Poulton-le-Fylde Brass Band and Aquatic Plant/Discus collector http://www.ascot.u-net.com/home/Band.htm