55 g tank question about rocks and what can hurt the fish?

K

Kelly

New member
i have a very large rock collection and i wanted to know if any of these could harm my fish

limestone with fossils in them
peacock copper
petrified wood
quirts crystal found with iron deposits
stalagmite
lapis lizaru (uncut)
agate (uncut)
garnet (uncut)
and a few metal figurines
brass
bronze
iron
any info would help i just dont want to kill any fish with my rocks
 
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