Flush tanks may come with associated problems such as leaking in seals, valves or connections. It is advised to check occasionally the tank for moisture leakage which may be detected by soggy areas on the floor, a perpetually flooding toilet bowl or any unusual dampness around the tank. https://www.useallot.com/read-blog/52686_small-changes-that-make-a-big-impact-in-bathroom-decor.html