PLEASE BE AWARE WHEN PURCHASING ONE OF THE SO CALLED 'IONIC FOOT BATHS', FOR DETOXING YOUR BODY, THAT THIS PARTICULAR ONE IS A 'JOKE'.  I PURCHASED ONE SPECIFICALLY FOR RESEARCH PURPOSES, AS I AM IN THE HOLISTIC FIELD AND WANTED TO FIND OUT IF THIS REALLY WORKED OR IT WAS JUST A SCAM.
I HAD IT DONE IN A SPA AND COULD NOT BELIEVE THAT, THAT AMOUNT OF TOXINS COULD POSSIBLY COME OUT OF THE BOTTOM OF MY FEET, WITHOUT ME FEELING SOME SENSATION.  OTHER THAN THE FACT THAT YOUR FEET FEEL GREAT, FROM THE SOAKING, I CAN TELL YOU THAT THE COLOR CHANGE IN THE WATER IS CREATED FROM THE SALT YOU ARE REQUIRED TO ADD AND WHATEVER 'IONS' THE 'ARRAY' PRODUCES TO MAKE 'RUST'.  IF YOU SMELL THIS WATER DURING AND AFTER THE PROCESS, THERE IS A DISTINCT SMELL OF RUST.  ACTUALLY, IT IS REALLY GROSS TO THINK THAT I AM SOAKING MY FEET IN A BUNCH OF RUSTY WATER. 
THE DIRECTIONS STATE THAT YOU SHOULD DO THIS EVERY OTHER DAY FOR TWO WEEKS.  WELL....ONE WOULD THINK THAT THE WATER WOULD CEASE TO CHANGE COLORS AS THE TOXINS ARE SUPPOSEDLY RELEASED, BUT THAT IS NOT THE CASE.  IT CONTINUES TO TURN THE SAME COLOR TIME AND AGAIN, WITH THE SMELL AND THE STAINING OF THE TUB BEING USED. 
I DID DO SOME RESEARCH BEFORE BUYING THIS UNIT AND WAS SKEPTICAL, BUT WANTED TO GIVE IT THE OLE COLLEGE TRY ANYWAY. 
IT IS 'A FRAUD' AND IF YOU ARE THINKING ABOUT SPENDING THE MONEY ON ONE, PLEASE, PLEASE, GO ON THE INTERNET AND TYPE IN 'IONIC FOOT BATH HOAX' OR SOMETHING SIMILAR AND GET SOME BACKGROUND.  IT IS JUST ANOTHER MAJOR 'RIP OFF'! 
PEOPLE WILL SELL ANYTHING FOR A BUCK AND SOME OF US, WILL SPEND MONEY ON ANYTHING THAT WE THINK WILL MAKE US WELL...INCLUDING A MACHINE THAT CAN COST OVER A $1000 TO TURN SOME WATER INTO RUSTY WATER.
THIS IS ANOTHER SAD, SAD MANIPULATION OF PEOPLES TRUST.
THERE IS A GREAT VIDEO ON 'YOU TUBE' ABOUT THIS PARTICULAR PRODUCT AND THE POOR GUY PAID $1000...  LUCKILY I GOT AWAY WITH ABOUT $70 FOR THE SAME UNIT.