Flow would be my first concern. Are your return pumps throttled back or are they really running 1800GPH, are they directed with locline?
The Hydor 2's really do not give enough flow for a 220G.
Im my 90G I have ~400GPH return from my sump, a Vortech wavemaker, 2xKoralia 2 and 2xKoralia 4 and I still don't think I have enough flow.
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- Greg
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
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