Flora Series is the industry standard.
Flora Series is the original. The first. Often imitated, never duplicated. Growers have been using this three part for over 30 years. They know exactly what they are buying and how it will perform every time. The Flora Series is the industry standard which all other hobby hydroponic nutrient formulas are tested against.
The three parts are seperate in order to keep the Calcium isolated from the Sulfur and Phosphorus. This prevents the formation of hard minerals in the bottles. FloraMicro is the foundation, it's used during both grow and bloom cycles. FloraGrow is the nutrient that dominates during a plant's vegetative stage, and FloraBloom is added while plants are fruiting and flowering. All three parts are extremely concentrated. When diluted in a nutrient solution they provide balanced diets for all plants during each of their perspective growth stages. Its effects can be customized with other robust supplements such as the Floralicious and KoolBloom classes of supplements as well as with FloraBlend, FloraNectar, and the Subcultures.
Plants love the Flora Series because it supplies them with an abundance of elements that are necessary during the plant's growth cycles.