Arguably the number #1 nutrient solution in the world. A three part nutrient system allows you to custom blend a formula based on type of plant and phase of growth that you want to promote. The system allows the mixing of special formulas for starting cuttings and seedlings, aggressive vegetative growth and aggressive fruiting and flowering. New hard water FloraMicro is now available for areas with high calcium levels.(Above 70 PPM) Specific instructions for different plants are printed on each label. You will need FloraGro, FloraBloom and FloraMicro. FloraMicro also come in a hard water version for people with hard water.