Marine Chlorella Concentrate is made from a selected single celled marine chlorella species rich in protein, HUFA, vitamins, minerals, chlorella growth factor (CGF), and it is characterized as more active cells, high purity and high nutritional value. The product is used as water conditioner to maintain green-water, stabilize ecosystem and provide continuous feeding to rotifers in larval tank of marine fish. The product is also used as enrichment for the rotifer to improve the survival of marine fish larvae.