If you have hard water, you can easily adapt Flora Series® by using FloraMicro® Hardwater instead of our standard formula. FloraMicro® Hardwater is part of Flora Series®, the original three-part hydroponic-based nutrient system from General Hydroponics®. By using different combinations of FloraMicro® Hardwater, FloraGro®, and FloraBloom®, you can fulfill each plant’s nutrient needs for every growth stage and environment. This combination, which you’ll modify based on each phase of growth, is optimized to deliver the primary, secondary and micronutrients your plants need for vigorous growth, large flowers, enhanced yields and nutrient-dense crops.