The perfect solution to those problems with difficult-to-reach and sticking taps or priming buttons. Moving parts, which are in regular contact with water become difficult to move after some time. Therefore EHEIM has developed a water neutral spray for use with all makes of aquatic and pond filters and pumps, using a special silicon. Maintains and lubricates all moving parts for aquarium and pond filters. You can easily reach even the most inaccessible areas with the practical spray tube - just point and spray!