Each flush must use a good effort to get down, rushed out of the water and small, small water is not a water problem,) is the kind of diameter is only 3 cm, the most common of the cylindrical Species. Is not the leading issue, or the line is not installed it? Please master advise
Is it rusty? Talk about it casually
Such a situation is best to see the scene, it is recommended to find a plumbing workers, to see,