Found this in the Asian Market, please state your opinions, to use or not to use.
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We all know dont dose unless you check for, but ........ how reliable are test kits ???? Salifert has done recalls and personally you get 2 diffrent makes of test kits most of the time you get 2 diffrent results, anyway potasium is a much needed metal, Potassium - Wikipedia, the free encyclopedia to take this further, even with massive water changes some ions need to be dosed.I would NOT put that in my tank as there is no way to know what is actually in it, and how pure that "what" might be. What makes you believe your tank is Potassium deficient?