I replace the guts in my toilet tank.
The old one was a ball on a shaft the floated up to stop the water flow. The
new one I bought has no float, I'm not sure what causes the water to stop
flowing but whatever it is its not working to well...
We came home the othernight and the tank had been running for about 5 hours.
It filled my septic system and started overflowing into the basement. only a
couple of gallons before we got hom and discovered it.


My question is:

What is the best/most reliable unit to put into the tank.
I dont want to keep telling the kids to wait and make shure the toilet stops
runing before they leave the house...


TIA


Steve