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Tropical Fishes Anonymous
hey /an/

to any of the fish hobbyists in here...

these are from an old smaller fishtank that was hardly used.

Are these white things carbon? If so can i reuse them?
>> Anonymous
>>173800
They're porcelaine. Yes you can reuse them.
>> Anonymous
OP here .. thanks anon :)
>> Anonymous
OP here again...

what exactly do they do? sry google wont answer my question
>> Anonymous
They are a filter substrate.
Nitrite bacteria can settle on them and then do their thing.
I don't really like em, I prefer to put these sponge filters in my filter.
>> Anonymous
>>173804

just an extremely huge surface for essential bacterias to grow on.
>> Anonymous
Whats your tank setup?