Athena Pro Core provides strong base nutrition at all stages of plant growth. Nitrogen to bind chlorophyll and amino acids. Calcium to form the structure. Essential microelements to catalyze photosynthesis, enzyme production and a multitude of important plant processes. Ideal for storage tank mixing and compatible with all dosing systems. This super-sized mix is 100% soluble and will not clog irrigation systems or leave sediment in tanks. Mixes thoroughly at room temperature. Low in heavy metals.