I have been living in the same apartment for the last five years. The last 2, years there has been what I would describe as a scummy bacterial growth in the toilet bowl. It is lite tannish, orange in color and resides below the tank’s water line. At the water line, appears to be a “black mildew like growth” that extends to the top of the toilet’s rim.
This stuff stinks to high heaven if I ever forget to flush the toilet after urinating.
If I clean the toilet it re-appears within a week. Dropping a chorinated toilet bowl cleaner tablet will stop it completly until dissolves.
Does anyone know what this is and how to permently stop it.