The water in the toilet slowly drains away but leaves about half the normal amount. I have used a spirit level and the toilet is level on the floor. Has any one any suggestions please?
If any one can help I would be grateful, after flushing the toilet, the water in the pan fills to the normal level, then slowly drains away to about half the normal amount. The floor is dry by the toilet and the outside wall is OK, has anybody got any suggestions?