I have light brown stains in the toilet bowls at the water line and runing down from the rim at each outlet hole. I have tried soaking with bleach, and mild abrasives like Barkeeper's Friend. I know that we have hard water, but I'm not sure what to use to eradicate these stains. I don't want to use one of those "blocks" that are rubbed on the porcelain. I tried one of those in a previous house and it had no effect. Any other ideas?
TIA Wayne