Atlantis single back flush kit Atlantis has released these new BackFlush kits. This product is in popular demand for those who typically run their watercraft in shallow surf and sediment rich waters. Back Flushing pushes the sand down and out through the pump utilizing the flow of water and gravity. Connects to your stock water squirter on the side of your ski, much easier than using other flush kits and adaptors. Ftis all PWC models with water squirter