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Old 01/02/2015, 08:34 AM   #66
Gonodactylus
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Join Date: Aug 2001
Location: Berkeley, CA, USA
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It looks like shell rot that has partially healed. However, this will often continue to spread after a molt. Good nutrition and water quality along with low light levels and a dark burrow are the keys to clearing this up. Make sure your nitrates are low. I have also found it useful to use UV sterilization and nutrient supplements such as Selcon.

Roy


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