The Planted Tank Forum - View Single Post - 5 dead cardinals the morning after purchase
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Old 10-12-2012, 11:01 AM   #20
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Cardinals are generally wild caught. This can make them very sensitive to anything but ideal conditions. Don't be surprised if you end up losing half or more. How big is your tank? Unless it's 100+ gallons, adding 18 all at once is also not smart.
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