Hydroponic fertilisers immediately provide all the necessary nutrients in the correct concentration to the irrigation water so that the nutrients can be absorbed immediately and sufficiently "when passing" along the roots.

All HESI nutrients are enriched with vitamins and other vital elements that take extra care of the plant and enhance its growth and flowering, but also encourage the development of micro-organisms in the medium. Especially in hydro systems, a healthy medium is important because the systems do not contain biological microbes in the beginning.