: I just replaced ALL parts in my tank to include the water supply line. Everything seemed to work great for a few hours. The tank filled up and stopped at the correct level, but when I checked it several hours later, the water in the tank was just about ready to overflow into the floor! Where is this excess water coming from.Its comming from the inlet valve, the rubber would appear to be seated wrong, or its faultyDISCLAIMERAll advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed plumber with my own business in Brisbane Australia