How long does it take for beneficial bacteria to grow?

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JackEmerson

Plecostomus
MFK Member
Nov 6, 2022
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Hi,
in a fully cycled tank, if I add new filter material to the HOB, about how long does it take for beneficial bacteria to saturate the new material?

The intent is to move that filter material to a new tank to aid in the cycle of the new tank.
 
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I would wait at least 4 weeks for the BB to accumulate.
 
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