Introduction offer, a very limited amount available! ISN Seaweed is a mix of North Atlantic and Pacific Ocean marine plants. ISN seaweed is one of the few products in the world that has a cold pressed refinement process which provides a rich source of natural enzymes, minerals, hormones, soluble carbon, sugars, organic vitamins, minerals and over 65 natural amino acids to your plant. Designed specifically for hydroponic systems, ISN Seaweed enhances root development and plant growth by increasing the organic building blocks in the root zone.