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hi im 13 ive had Oscars and are sensitive to nitrates you should be changing the water regulary and should have an air pump and they should have a big tank and not to many tank mates

hi im 13 ive had Oscars and are sensitive to nitrates you should be changing the water regulary and should have an air pump and they should have a big tank and not to many tank mates

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13y ago

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