On my toilets, both fill tubes are connected to the OUTSIDE of the overflow tubes, so the stream of water is going directly to the tank.

I went ahead and directed the stream to now go into the overflow tube.

Will this help the performance of the toilets now?

  • You have two fill tubes?
    – Alaska Man
    Commented Nov 16, 2020 at 0:59

1 Answer 1


Yes. That's how it's supposed to be.

You have water coming out by the tube which has the on/off mechanism and a small flexible pipe that is expected to send water inside the overflow tube to refill the bowl. Without that, the bowl is not likely to refill much, actually.

I uploaded a video on YouTube to show it in action.

enter image description here

  • 1
    ...I think you mean bowl, not tank. Or pan, not cistern for our cross-ponders.
    – Ecnerwal
    Commented Nov 15, 2020 at 21:26
  • @Ecnerwal Correct! I made a quick edit. Thank you. Commented Nov 15, 2020 at 21:30

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