Seaweed is rich in a variety of nutrients, including vitamins, polysaccharides, alginic acid, mannitol, betaine, highly unsaturated fatty acids, antibiotics and a variety of natural plant hormones.
Simple and fast seaweed fertilizer screening method:
1. Good water absorption. (granular seaweed fertilizer)
2. It smells sea fishy.
3. See if the fertilizer has sediment. (The real liquid seaweed fertilizer is not layered.)