HayleyK
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- Joined
- Jun 21, 2013
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- 1,199
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- Location
- Sydney
- Country
- Australia
- Display Name
- Hayley
I bought a new filter today, just a small internal one. I have to separate the two babies thus two filters. In my big tank I have a well established HOB filter, so I placed the new one in the big tank. How do I know / How long until there's enough bacteria growth in the filter to transfer to a new tank?