I like a display fuge. They look good, are a great place for pods to reproduce, can have a layer of mud, house other inverts you don’t want in the main tank. For $500 you could set up a killer sump with display fuge.
It is a whole different biome in your tank to help process nutrients and create food for your coral and fish. You can remove nutrients by removing algae or recycle by feeding it to your fish and inverts in the main tank.
Using a reverse light schedule will also help keep your pH up at night.