The true needs of our animals diet is above my knowledge nor do I have time or interest to study such in depth material scientifically.
Therefore I use a variety of reputable brands of phyto as well as foods. Also feeding these foods at different times throughout the week. I do nighttime feedings as well as daytime feedings. In reference to feedings I'm including products such as Red Sea reef energy and products of the like...
It's not that I don't trust one as being good, I just feel that "I"don't know it's true ingredients, caliber in quality, correct preparation, packaging and shelf life. The fact that corals feed at different times and it different lighting is also considered in my feeding schedule.
My recommendation is to give it a variety in diet and feedings with multiple products that you know and trust.
"Advanced Aquarium"
Zooxanthellae are acquired by corals in two ways: first, they may be given a "starter culture" by the parent if the parent colony broods its planulae. Alternately, in corals that release sperm and eggs into the water and where fertilization takes place externally in the water column, planulae (lacking zooxanthellae) can swallow the algae from the water column. Once swallowed, the algae are not digested but are brought into the cell and put into a small intracellular bag called a vacuole. Once inside the vacuole, they are "trapped" and somewhat at the mercy of the coral polyp. The golden brown algae reproduce within the cell and form a dense, but very thin layer within the polyp. The zooxanthellae are found mainly in the inner tissue layer of corals called the gastroderm, although they can occasionally be found in the outer layer (ectoderm) and are in the tentacles of day-feeding corals. Night feeding corals have transparent tentacles that normally lack zooxanthellae.
This article has been updated and is way above my interest and knowledge of interest but you did get me started
