Og Tea Old School Growers Live Micobial 1 Pound Bag Adding OG Pure to increase beneficial numbers can only add to the success of your grow. Add OG Pure to your foliar feeds either using Veganic Special Sauce or Vega Matrix Hard and Quick and add biological protection to the leaf, stem, and flower. Include OG Pure in your flushing solution to add biological salt eaters to enhance the breakdown of those salts to achieve the quality of product you truly desire.