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.
How To Do A Water Change. 1  Add fresh tap water to a bucket or a water jug. 2  Adjust water temperature using cold tap water and boiled water. 3  Place the gravel cleaner inside the tank.  Move the gravel cleaner from one corner of the tank to the next.