Ich probs on guppies?

I NEED SOME HELP MY MALE GUPPY HAS ICH AND I WAS TOLD THAT EPSOM SALT OR TABLE SALT WOULD DO THE TRICK. BUT... I NEED TO KNOW WICH IS MORE AFFECTIVE? AND HOW MUCH SHOULD I ADD WHAT MEDICINE TO BUY? HOW MUCH IS IT? HOW DO I ADD THE SALT? I HAVE SIX OTHER GUPPIES FOUR OF WICH ARE BABIES NOT BIG ENOUGH TO MATE BUT GOOD SIZED TO KEEP IN NEARLY UNPLANTED TANK. I OWN A FROM THE LOOKS OF IT TWO GALLON TANK AERATION, AND LIGHTING ARE PROVIDED.