Dutch Master Original Formula is Australia's No1 general purpose hydroponic 2 pack nutrient. Designed specifically for indoor conditions by our in house Dr of Plant Physiology & Bio Chemistry, Dutch Master original formula provides your plants with all the elements required for vigorous indoor growth & flowering. Dutch Master Original Formula has been ion balanced using our proprietary in house modelling programs to ensure that all the elements contained within Dutch Master Original Formula are maximally available to your plants at any given time. As with all Dutch Master products, Dutch Master Original Formula is constructed with British Pharmaceutical grade ingredients to ensure that there are minimal impurities to upset this delicate ionic balance. To ensure this, Dutch Master sources the base materials from all over the world to ensure strict purity compliance. As with each & every Dutch Master product, Dutch Master Original Formula is tested in an independent ISO 9002 rated laboratory to ensure that every batch meets our strict quality guidelines. Dutch Master Original Formula Grow is designed to provide an ionically balanced suite of pure elements tailored to meet the nutritional needs of fast growing annual plants in the vegetative stage. High in quality Nitrogen & calcium with a balanced amount of pure Ammonium Nitrate, Original Formula Grow is ideally suited for providing a plants every need during this rapid vegetative stage. Dutch Master Original Formula Flower is an ionically balanced formula which caters for the changing nutritional needs of those plants undergoing the flowering stage of development. High in Potassium & Phosphorous Original Formula Flower provides for the increased needs of those elements whilst retaining its ionic integrity.