toilet problem
I am having a problem with my toilet and am wondering if anyone can help me fix it. I am getting a black ring in my toilet at the waterline in the bowl. I will clean the toilet and in a day or so the ring starts again, slowly. I can't figure out why. In a week or so if I don't clean the bowl the ring at the waterline will be black. The bottom and sides of the bowl will also have buildup on it too. I am thinking that it might have to do with the cast iron sewer line that it flushes into, but could it have something to do with the waterline? I am also contemplating replacing the whole unit anyway because of all the old parts that I keep having to fix and buying a nice super flush model. Anyone have any brands or models that they could suggest? phil