If you have connected return lines from your sump to the aquarium, use a SCWD Wavemaker to T off one or two return lines.
Simply install the SCWD on the return line from the pump and connect each of the two returns from the SCWD to return jets on opposite sides of the aquarium.
The SCWD will alternate the water from the return pump from one return jet to the other creating constantly changing currents.
Your corals will come alive with movement as they sway in the currents.
An easy upgrade that will make a big difference in the success of any reef aquarium.