Water flow

[digital-audiophile]

In my 90, I get a little bit of flow though mostly aeration from the return line on my sump, I have to Hydor Koralia 4's on both sides of the tank for flow. I am thinking about adding a Koralia 3 in the middle of the back wall to add a little more mixed flow. I'm not keeping SPS right now so the flow is not as vital and with my sand bed it is a challenge to adjust the flow so it doesn't stir it up too much.