Just a quick note. Newly hatched BBS have limited nutritional value and are very low in DHA. If you grow them out for 24 hours they develop a mouth, change little in diameter and elongate. At this point they can be enriched with T. iso, nanno, tetraselmis, Vitachem, Algamac, etc. Depending upon what you are feeding you will need to determine what enrichments you would want to use. It is possible to significantly modify the nutritional value of the BBS with additives, thus enhancing coral growth, fry survival, etc.