Biopellets, Prodibio or Zeovit Nano???

So I have hit the stage where all my water parameters are within normal ranges and stable and I have added a few SPS Corals to my aquarium along with a Clam. But I would like to implement something to address the phosphates and nitrates within the water column without having to run two separate GFO and Carbon Reactors. So have been thinking about a Biopellet Reactor, Prodibio dosing, Zeovit Nano dosing or a combination of the above. Does anyone have any experience with this or could make any type of recommendation. I have heard such great things about the Zeovit system in general but I don't have the space to run the equipment necessary in my aquarium without adding a sump for a full blown Zeovit aquarium. However from my reading the Zeovit Nano is just the additives without the use of the Zeolites. Any food for thought from anyone?