Tricks to getting flow right???

[LeanneP]

I have a 90 gallon tank with a HOB skimmer, 600 gph HOB overflow and a 1050 gph Koralia pump. I usually have 2 pumps going but I just got a fox coral and a bubble coral so I turned one off for now. My question is how can I position the pumps to give more flow higher up, but less on the bottom. I have played around with them but I can't seem to get the lower flow on the bottom. The bubble and fox don't seem totally happy with the flow I have right now and that is with only one pump on. Any suggestions?

Leanne