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Toilet leaks are visible, just open the toilet lid and see that there is water flowing underneath.
If your toilet window is frosted, then you can't see it, even if the toilet lights up, it's just a shadow. >>>More
There are screw holes at the bottom of the toilet, and it is enough to measure the distance from the screw holes to the wall.
Possibly, because there is no flooring, the perimeter (bottom) of the toilet may not be flat, so it is difficult to seal the edge effectively. Some toilets may leak on the inside of the mouth, but it still has an impact. It is not easy to deal with other glues. >>>More
Pit distance refers to the distance between the center of the toilet sewer pipe and the wall, generally 300mm, 350mm, 400mm, 450mm, etc. Choosing the right toilet starts with choosing the right pit spacing. >>>More
Check whether the blue float is stuck and insert the thin tube into the overflow pipe.