One of the most common and most frustrating toilet tank problems is the slow leaking of tank water through the flush valve, into the toilet. As the water leaks, the tank water level falls and the toilet ballcock fills it back up again. It's a wasteful and annoying problem.
Well one of the neatest products I've found is a sub $10 repair kit made by Fluidmaster called the Fluidmaster "Flusher Fixer" Model 555C. It allows you to repair the flush valve with a fool-proof valve kit that anyone can install. In this tutorial I'll show you how easy it is to install and you can save over $100 in a Plumber service call.