Lyme disease is diagnosed clinically based on symptoms, objective physical findings (such as EM, facial palsy, or arthritis), or a history of possible exposure to infected ticks, as well as serological blood tests. The EM rash is not always a bull's eye, i.e., it can be solid red.
Rule of Thumb for Changing Filters. The rule we have followed for 18 years in the filtration industry is to change filters every 6 to 12 months. Six months is almost always optimum, especially in commercial/office settings, and twelve months is as long as you want to go no matter what.
It doesn't have a battery filter change reminder but you can sign up for email filter change notification to change your water filter every 6 months. Two of the filters ($45 for the two filters) need to be changed every 6 months while the reverse osmosis filter ($59) should be changed once a year. The biggest complain I have heard about these reverse osmosis systems is that it appears that a lot of waste water goes down the drain.