What is crystallizing out of my PMDD in the refrigerator? My standard mix is: Mixed with 1/2 liter of water, 1 tablespoon chelated trace mix (Homegrown Hydroponics) 1 tablespoon MgSO4+7H2O 2 tablespoons K2SO4 1 tablespoon KNO3 (more or less, depends on nitrate) Tom