You really wouldn't want aquarium salt in a planted tank. And I believe (not 100%) that Epsom salt is mgso4 which is a dry feet in planted tanks
Epsom salt is indeed MgSO4 which is magnesium. It rarely has to be added to a planted tank as most tap water has adequate amounts in it. I believe if I remember my chemistry right that aquarium salt is NaCl which is sodium chloride and you don't want sodium in a planted tank.
George9 said:Epsom salt is also kinda like a fish laxative. They'll crap their brains out when you add it to the water lol