Hello Cursing Crohn's
Welcome. You do have a problem here and this is the best I can offer you.
Salt substitutes are edible products designed to taste similar to table salt, which is mostly sodium chloride. They usually contain mostly potassium chloride, which when consumed increases potassium intake. Because excess potassium intake can cause potentially fatal hyperkalemia, it is advisable to check with one's physician and pharmacist before using salt substitutes based primarily on potassium chloride.
I do not know the name of any salt substitute without potassium.
Good Luck and hopefully someone wiser then me will post to you. 
Respectfully
Kitt
RN CCRN, Critical Care and Emergency Department Manager for 26 years.
Depression 25 years, Husband Crohns Disease 30 years
My Father and 5 siblings all died of Cancer. It is a subject close to my heart to help people with Cancer.
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"If you doubt you can accomplish something, then you can’t accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”
Rosalyn Carter