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 #2283  by Priscilla
 26 Nov 2016 15:44
I was just looking at my tank as usual but today I noticed this smokey looking thing on the cave. Does anyone know what is this? Image
Image


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 #2285  by opae ula related
 26 Nov 2016 17:36
Joking aside, dont know what it is but I would personally remove it.
 #2288  by odin
 27 Nov 2016 18:25
I've had this in my newly setup fresh water tanks when i've added wood or similar, i cant be sure if its the same stuff but it wasn't harmful to the fish or shrimp. I would probably just remove the cave and scrub it in some fresh RO/distilled water or what ever you use just to be on the safe side just in case.