You might find this thread useful:
https://www.reef2reef.com/threads/how-often-do-you-dose-amino-acids.709684/
On page two of the thread a study is linked that relates to your question. I quoted the conclusion of the study here:
Conclusions In summary, all five species of scleractinian corals tested could synthesize at least 16 of the 20 protein amino acids, eight of which are essential in other Metazoa examined so far. It remains to be determined whether attached or coelenteric bacteria are responsible for some of the synthesis. Even if bacteria are in fact responsible for the synthesis, however, this finding is significant from an ecological-unit perspective. If coral gut bacteria or bacterial endosymbionts regularly convert sugars (which reef corals receive from their zooxanthellae) into amino acids, and if corals have access to bacterial products (e.g. digestion of bacteria or bacterial excretion of amino acids into the coelenteron), then in a functional sense corals have a previously unaccounted-for source of protein and amino acids. Despite the apparent ability of corals to synthesize some essential amino acids, rates of amino acid synthesis seem to be greater for those amino acids that are typically non-essential, and slower for those amino acids that are typically essential, with the exception of histidine. The role of synthesis in satisfying metabolic requirements for ‘essential’ amino acids still needs to be determined.
It appears that corals (Cndarian) use more amino acids that than other organisms like humans, rats, fish, and chickens. It seems that the product you found, because it was not develop for corals may be missing some key acids. Probably safer to go with a product developed specifically for our aquariums.
