The company was glad to correct my mistake and only charged me the ...
First, know that some of the color changes in the water are a result of chemical activity, not all stuff oozing from your feet.  That said, this is a relaxing way  to detox acids from the body so it becomes more alkaline.  On my first try, I, too, had problems with the alarm and was not clear about the purpose of the dials.  I sent an email to the company and received a speedy reply with detailed instructions.  Also, I mis-ordered and received the spa machine without a foot bath and a few other necessary items.  The company was glad to correct my mistake and only charged me the small difference between my wrong order and the one I wanted. Once you figure out your correct dial and salt setting, this is easy to set up and use.
Rating: 5 stars