Usually in the cistern of the toilet in an actuator of a shutoff valve on the lever set hollow plastic float. If its integrity is violated, it fills with water and stops working. As a consequence, continuous noise of flowing water, condensed moisture on the tank, dampness and mold.
Radically and just to correct the situation will help a stick of foam, which you must impose on the lever instead of the float.
Recommend to read
FROM THE GLIDER TO A BIKE-AMPHIBIAN
"After reading # 1, 1975 note", Polihale", I can not write about his former teacher, the head of the circle of technical creativity of the Chernyshev Lev Sergeyevich," writes a reader...
AND THE TANK, AND DECORATION
There is no need to prove how important it is to have in the garden water supplies that happen with irrigation system and flower beds with lawns for the week of the July heat will turn...