power head positioning for a 125g reef

[jkcrumb]

I currently have 2 hydor koralia 3's on each end of my tank located about 3/4 of the way towards the top blowing down on a slight angle and my main return (1000 gph) skimming the top of my tank to help with oxygenation. I am looking to get more into SPS's and I know they require more flow. I am also looking to purchase a wave maker control all my power heads.
My question is, if I wanted to add more power heads where would I place them?? and would I get more hydor koralia 3's or back the additional heads down to 2's or 1's???? Also, any suggestions on a good wave maker controller??
Thanks.........pics of your current setup would be awsome!!!!!!!!!
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[jkcrumb]

o yea.........the dimentions are 72"L x 24"H x 18"W

 

[digitydash]

I have seio 1100 I believe it is.It is pointing up and a koralia #4 pointing down.It turn the water good.My sps are happy with the flow.Couple little paches of xenia doen't like it.When I shut down the pumps to feed they start pulsing but can't tell when they are on

 

[tx reef]

You just have to position them in whatever way works best for your tank.
In my 54 gallon corner tank, I have 2 Seio 2600s under the rock work pointed straight down (bare bottom tank) and 2 Koralia #4s for additional water movement.