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blue crayfish
i recently set up a 10 [acronym:5580284f4d="Gallon"]gal[/acronym:5580284f4d] freshwater tank using gravel and water from my 55 [acronym:5580284f4d="Gallon"]gal[/acronym:5580284f4d]. i let it cycle with 5 danios for about 4 days. i put a blue crayfish in there thinking it would be alright but i found it dead this morning. the fish are still fine. im gonna test the water but what else should i do to prevent this from happening again.
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