My tank gets like that too. Its caused by too much cavitation in the sump. The air bubbles aren't fully dissipated when the water is pumped back to the tank. I found that putting a filter sock on the drain pipe output in the sump helps a lot.
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My tank gets like that too. Its caused by too much cavitation in the sump. The air bubbles aren't fully dissipated when the water is pumped back to the tank. I found that putting a filter sock on the drain pipe output in the sump helps a lot.
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