XXX: Changed the tete somehow the syphon tk. Buying a new one was cheaper than cleaning the existing one from food residues, crushed branches, small bones, etc. that came from somewhere. To get rid of the reappearance of such problems put a removable grid, showed how to clean. After 2 weeks, the new siphon is sealed with almost the same composition, the net is removed. To the question "why?" the witch answered "so faster it passes". Having made Facebookpalm put an indelible grid, I hope it won't turn off.