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Old 11-26-2006, 02:16 AM   #1
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black long spined urchin

I have a 3 inch long spined urchin which I have had for about 6 weeks. He is healthy and is eating well. For the last few days I have noticed that 3 of his spines are starting to turn white. Can anyone tell me why this is happening. The water parameters are fine with 0 nitrites and 0 nitrates. I do water 15% water changes every week. temp is 79 degrees. Salinity is 1.022. Tank is a 70 gallon. One fluval 404 and an undergravel filter.
Thanks very much.

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Old 11-26-2006, 02:51 PM   #2
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My pincushion's do that when he sits next to a heater for too long. If you water parameters are good, you should be ok. I would be worried if he drops a bunch at one time. He could be getting ready to shed them....
Age is relative, you are only as old as you act....of course, this works in reverse....

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Good reading about:
Nitrogen Cycle
Fishless Cycling
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chi, long, urchin

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