Dual-flush Toilet Not Filling Up Properly
Don't worry, dual flush toilets aren't any different. It sounds like your Fill Valve (the tall thing on the left) is on its way out. You can do a new one with just big pliers &amp; you'll need to replace the water hose from the wall to the toilet. $30 &amp; 30-minutes, at the most, should get you back to normal. Or, call Roto Rooter if you don't do that stuff. It's common but not too predictable, every 10-years is a good preventative rule.