You will see that MICRO is the secret for success, supporting the crop during their complete life cycle. Dutch Formula MICRO consists of a strong nutrient mix of chelated micro elements, in combination with unique pH buffers, thus providing extra power and stability for growth. DUTCH FORMULA: For All Substrates. The application of Dutch Formula goes beyond hydroponic systems. Dutch Formula can be used for ALL substrates. Earth growers and coco growers have all seen this happen.