Just remember, most important thing is oxygenation.Saltwater can't hold as much oxygen as freshwater can.
To be honest with you, all i run on my sps reef is a sump filter (bio-balls taken out, but only a couple pounds of live rock in there)
Return pump, pump to chiller . Heater. Lights. 60g cube, with 90 pounds of live rock in the display.
No sponge, No filter. Just frequent water changes.
Maybe a couple chunks of cheatomorpha in the display tank.
So don't get crazy with the filters, Because where you should be spending money is on things that will oxygenate your tank the most. IE. Protein skimmer..Sump... wave makers. Powerheads are good for directing flow, but how much do they oxygenate the tank ?
Also another thing i've noticed to keep things healthy, is a SURFACE SKIMMER. To prevent slime from forming on the surface of the water, between water changes.
Goodluck to you.. and tapwater can be a pain in the rear.