Before entering the pool, you must remove all sharp-tipped items and jewelry such as bracelets, necklaces, rings and earrings. These types of sharp objects can damage the PVC ring. Small jewelry can get sucked into the filter and cause serious damage. If they get stuck in the cartridge, try following the instructions for cleaning the cartridge in the user manual. Remove the cartridge and try to remove the trapped jewels by turning the filter upside down.