... or brown flake, water soluble, pH=8-10Main ingredient: Alginic Acid: 8-15%, organic matter≥50%, N≥0.5%, P2O5≥3 ... %, much secondary element and microelements, cytokinin, betaine, vitamine, trehalase, amino acid.Efficacy: Improve crop's quality, enhance resistance of crops, induce ... /DHydrargyrum(Hg)N/DChromium(Cr)N/DArsenic (As)N/D Natural Seaweed Extract Flake, 100% water soluble