White "cobwebby" stuff on rock

rkmayphd

Member
I have some lace rock in my 46 gallon tank that is on the fifth day of the cycle. One of these rocks is mostly covered with a white "cob webby" substance (forgive the techincal terminomolgy :) ). It looks kind of encapsulated. There is one small spot on another rock. It does not appear to have gotten on any of the live rock.
BTW I started the cycle with a cocktail shrimp. The same looking substance appeared on it after a day and a half in the tank.
Any ideas on what this might be?
 

birdy

Active Member
I have had that on cycling tanks before, I assume it is some sort of bacteria. nothing to worry about it will go away in time.
 
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