I know tear stains have been discussed to death, but I have a new problem. We moved from city water to well water about 1 1/2 years ago. I am having trouble with red staining on feet, faces, etc. One dog actually has a red head at this point. Only some dogs, not all are affected. Did not have this before. Someone told me probably well water in our area. Question is, I am going to have filter installed. Should I get a whole house filtration system or a whole house water softener system? I know the difference, I am assuming the filtration system would filter out minerals that may cause the red stains. Anyone know or have experience with this? We do have very "hard" water.