DaKine 420 Nitro Nutrients Fertilizer Starter Kit Fertilizer GROW: Nitrate nitrogen, the most efficient nitrogen source for plant growth, plus the industrys best calcium that is free of chloride, sodium and heavy metals. BASE: NPK, plus our brilliant trace mineral package, all in one formula for the initial grow phase. BLOOM: Our super finishing formula supplies NPK in perfect balance (with 3 times more potassium than nitrogen) to assure high yields and trophy buds.