Upon reflection, I am sure it was designed for a bean animal, however you know how companies are. They may have rated it full flow on all 3 to give it higher numbers.
Sorry, didn’t factor in corporate greed.
I have a photo of my tank when I was letting the macro grow. It gives the tank a different look from the coral dominated reef tanks. Both are beautiful in their own way.
I suppose you just put any macro you get in the seahorse tank. A good deal that way no waste.