Nope, I just tinker with my placement until I get nothing lingering on the sandbed without disturbing the sand. You pretty much just want constant flow in every nook and cranny of the tank. All tanks are of course different due to rockwork but just play with it til you find the sweet spot.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.