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.)