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Originally Posted by jon.smolders
I did not do an acid bath before putting them in the tank, so all the organics in the rock could be feeding the bacteria...
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The rock is pressure washed with saltwater on the dock after it is harvested. This gets rid of the majority of the external organics. There would most likely be some worms, crustaceans and bivalves within the rock that would need to cure out.
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Originally Posted by Jaws
fish are suffering with pretty bad signs of what appears to be either ich or stress
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I would suspect stress from low dissolved oxygen and a low redox.
Are either of you doing any home renos with gyproc/drywall at all?