Athena Pro Core provides strong baseline nutrition across all stagesof plant growth. Nitrogen to assemble chlorophyll and amino acids.Calcium to build structure. Essential microelements to catalyzephotosynthesis, enzyme production and a multitude of important plantprocesses.Readily available Nitrogen, Calcium, and essential microelementsFully soluble dry fertilizer, no particulates or sedimentWorks with any dosing system: Dosatron, Netaflex, RhythmMixes completely at room temperatureLow heavy metal contentIdealfor mixing stock tanks and compatible with all dosing systems. Thislarge-grind mix is 100% soluble and will not clog irrigation systems orleave sediment in reservoirs.