Sounds like the ocean....lolMy only question to this , how are you going to supply the alk and calcium needed for growth .
Didn't think of this.
My thought was to investigate alternatives to a fuge but if you have to fight the alk/Ca levels then maybe a Chaeto fuge is better.
The lure of the "perpetual motion machine" is always appealing - the fish provide the waste and the oysters delight in it - a natural solution and in theory almost zero work , no special Chaeto lights/sump space etc.
An idea too good to be true?