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.
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- Greg
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
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