I doubt that you will see much difference. It is unlikely that your acropora can catch and use them directly, but somelike Poci might be able to. In the end, something will break them down and the corals might get a shot at some ammonia from whatever eats them. You could just dose ammonia/ammonium directly and skip the other stuff.
I see no downside if you residual N and P levels are not high. If they are, then I would avoid stuff like this. This has been true of all of the here-and-now supplements over the years where people swear about their virtues for a while and then they become a punchline in forum jokes when they go out of style. The truth is that nearly none of them really do much. Search for DTs Phyto, Oyster Eggs, etc. and see the thousands who swore that they worked only to see very few use them now.