On 7 Nov 05 at 13:43, Alberto Castillo wrote: > Muriate of potash and potassium sulphate are the > same thing. No they aren't. "Muriatic acid" is hydrochloric acid and "muriate of potash" is potassium chloride, not potassium sulfate. Chemical formulas: KCl and K2SO4 -- Rodger Whitlock Victoria, British Columbia, Canada Maritime Zone 8, a cool Mediterranean climate on beautiful Vancouver Island