Will copper kill beneficial bacteria?

BRS

Miami Reef

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I’m setting up a quarantine tank and I want to establish bacteria in it and keep it running so I can treat fish with copper and prevent any deaths from ammonia.

I’m thinking of buying a 20 gallon tank. And quarantine them that way. Will tanks cycle with copper?
 
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threebuoys

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Not in my experience. I have a 20 gallon qt with a canister filter loaded with poret foam. The foam does not absorb copper nor do I have any rock in the QT. So, all of the bacteria needed to process ammonia is housed in the foam. I took aged foam from my DT to initialize the canister for the OT.
 

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my experience is that it kills of a lot of it, but not all. Next time, I'm going to run a seeded sponge filter in a 5g bucket that I can let ammonia spike in just to over-populate, then put it in QT.
I use a 20g tank - I bought a 20T, not a 20L, and I fill it to 10g. I could always fill higher for a large fish, but this gives jumping room without impact to the lid - which was a problem with 2 previous wrasses.
 
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