Growth medium refresher. Used to dissolve mineral build-up that causes nutrient deficiency, Super Leach® gently flushes the growth medium to ensure a fresh nutrient profile throughout the growth cycle. HOW TO USE Add 1 TSP (5 ml) per 1 GAL (4 L) of water. Stir thoroughly to ensure mixture with water. Pour into growth medium until runoff. Allow growth medium to soak for 20 minutes. Flush with clean water until runoff. NOTE: Use Super Leach® between growth stages and after ripening stage. Click here for our feeding program chart. See the Product Label here