Found out today that my potassium was 3.2, not really having symptoms. i was told to drink v8 which i did. now i am worried about heart arrithmias.

Don't worry but...: It is unlikely this level will cause serious heart arrhythmias. To me the important question is why you have low potassium. Is your diet really low in fruits & vegetables, have you been vomiting or having diarrhea or are you on diuretic medicines? Good sources include chard, spinach, tomatoes, potatoes, mushrooms, carrots, oranges, bananas. See http://www.Whfoods.Com/genpage.Php?Dbid=90&tname=nutrient.