For circulation check into a powerhead or two. A single Koralia 2 or pair would probably do quite well in there to supplement the spray bar. As mentioned earlier, it will be important for you to aim a powerhead (or the spray bar) at the surface so you ripple the surface fiarly strongly. This improves water quality by reducing the greasy layer that will try to accumulate on the surface without a sump, and also helps to keep your pH up without the help of a skimmer.
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~ Mindy
SPS fanatic.
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