Cyco Nutrients - Platinum Series - UptakeA Concentrated Source of Humic Acid for Better Uptake Rates Humic acid is a natural substance that is derived from decomposed organic matter. It is a source of essential nutrients for plants and is an important component of healthy soil, which is why it's also a key ingredient in many soil ammendments and fertilisers. Humic acid helps to improve soil structure, making it more fertile, and it will also increase the efficiency of the other fertilisers