... refined from natural seaweed . specification: powder, flake, solution Seaweed fertilizer (manufactuer)Seaweed fertilizer (powder ,flake) and seaweed fertilizer solutionOur seaweed ... potassium, calcium, magnesium, microelement (Cu, Fe, Zn, Mn, B), alginic acid, cytokinin, betaine, mannitol, polysaccharide, iodine and so ... with water into the soil. growing agent seaweed fertilizer, seaweed extract