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Posted by Roger Shoaf on February 22, 2008, 11:17 pm
> > Recently I've noticed that about 20-30 minutes after flushing, the water
> > level in the toilet bowl drops about a half an inch and will maintain
its
> > newly reduced level. There is no leak from the tank, and no more is
> > entering the bowl. I'm on the 2nd floor directly above another tenant's
> > bathroom. Could some inter-play between his toilet and mine be causing
> > this? He says there are no apparent leaks in his ceiling. Does anyone
have
> > an idea what might be causing this?
> > Thanks.
> > ---
> > alan
>
> after browsing fluidmaster, i read that overfilling the bowl may also
> be the cause. i would try removing the fill valve's rubber hose hose
> from the overflow tube and observe the flushed/refill water lines
> again on a matching timetable. then repair according to your results
> and desires.
> don't have the rubber hose extending down into the fill tube it will
> cause a problem of wasting water. there are excellent directions with
> your fluidmaster products.
> for all toilet stuff just go to:
> www.fluidmaster.com
It is not an overfilled bowl because that would not take 20 minutes to drain
off. In a toilet, the bowl level is the same as the bottom of the trap.
The only two things that could be causing a lowering of the level is a
cracked trap or a suction on an improperly vented waste line.
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