The Planted Tank Forum - View Single Post - Fully cycled already?
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Old 01-25-2013, 02:19 AM   #32
wendyjo
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You can certainly instantly cycle a new filter/tank if you take enough bacteria from an established tank to support the bio load in the new tank. I don't suggest doing that in this case since the "old" tank will still be relatively newly established, but it can be done. I do it all the time using media from my big tank to instantly cycle my small ones.
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