I'm going to have a system to do exactly this and more, the feed button could even be mechanical or a clicker on the screen.My goals are similar. Yes the pumps can be slaved but I would be locked into a specific feed cycle, seahorses are slow eaters 10 minutes not enough I would prefer to manually hit A feed mode button on Robo tank and skimmer, pumps etc would shut off, then hit a resume or have a default timer of say 60 minutes kick everything back in incrementally as programmed.
I also am hoping to have 3 or 4 pumps circulating water and be able to program them in different combinations throughout the day to change up the flow