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What do you have that will improve oxygenation? I have my skimmer, a powerhead that disrupts the surface of the tank, and an air stone running. O2 is managed by paying attention more than anything; if your fish look like they're breathing heavy, you need to lend a hand and improve the amount of water you're exposing to o2.
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-Jeremy
"Quidquid latine dictum sit, altum viditur"
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