Fine bubbles are very useful in a post-harvest seaweed washing and freshness system as they can combine two functions in the same water: 1. Provide dissolved oxygen (DO) to keep harvested seaweed metabolically alive. 2. Create gentle water movement and bubble–surface contact that helps detach sand, silt, mucus, epiphytes and other contaminants. Post-harvest seaweed is still biologically active and continues to respire.
As no more sunshine is available to such seaweed, water having high oxygenated level is necessary to meet the respiration demand by seaweed of very high biomass level in small water tanks.
