Description The SUBSTRA fertiliser line, made distinctive by the colour green, was developed for the so called inert mediums. These mediums do not provide the plant with nutrients, nor do they take them away from the plant. As a consequence, all of the necessary nutrients must be added to the irrigation water. The fertilisers in the SUBSTRA line are particularly suitable for plants growing in rock wool, glass wool, perlite and other similar mediums. This product contains everything that the plant needs during the growing phase and is developed for growing in hydroponics. Products are sold in a set of both A and B. Available in Hard Water & Soft Water
