... irrigation Cert:IMO ISO9001/1400 Seaweed extract liquid (seaweed fertilizer)Product feature: Black brown liquid, water solubleMain ingredient: Formulation I Alginic acid ... , K2O≥50g/L; much secondary element and microelements, cytokinin, betaine, vitamin, trehalase, amino acid. pH: 7-9, specific gravity: 1.10 ... )0.5g/L80g/LPotassium (K2O)50g/L140g/L Seaweed extract liquid fertilizer