General Hydroponics recommends using Hardwater Flora Micro if your tap water is over 200 ppm (or contains Calcium above 70 ppm). If your water contains 30 to 50 ppm Calcium, you can mix the original Flora Micro with Flora Micro Hardwater to create a perfect Micro blend for your plants.
Flora Series is the original 3-part Building-Block Nutrient System. It contains all Primary, Secondary and Micronutrients necessary for balanced plant nutrition, enhanced yields and superior crop quality. These nutrients form a complete and balanced fertilizer that provide plants with everything required to successfully build strong plant structures and big blooms. Flora Series is pH buffered.