agriculture grade, refined from natural seaweed . specification: powder, flake, solution Seaweed fertilizer (manufactuer)Seaweed fertilizer (powder ,flake) and seaweed fertilizer solutionOur seaweed fertilizer are finely derived ... of nutrition element and plant growth regulators including nitrogen, phosphate, potassium, calcium, magnesium, microelement (Cu, Fe, Zn, Mn, B), alginic acid ...