Tunze powerhead and controller settings?

[newreefer_59]

Still not sure if I am getting the full useage (ie: bang for buck) out of my 7095 controller and 6055 X 4 powerheads in my 150 gallon reef tank. It seems to be doing a good job as it is, but would hate to have missed out on a truly effective set-up for my tank specs. There is no gravel added as of yet, but plan to add it soon. Any suggestions?