Can you cycle a new filter on an tank with an established filter?

[EdPo21]

I have a 55 gallon with a that has a filter(Aquino hang on back) that has been through the nitrogen cycle. I want to buy a fluval 405 and run it with that filter and I was wondering of the fluval will build up beneficial bacteria on its own, or do I have to put it on an empty tank and do a fish less cycle in order to build up bacteria.


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[NitroDempsey]

No it will build up on its own


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[ecoli73]

You can put it on the existing fish tank...it'll even be faster if you mix some biological material from the old filter in the new filter.

 

[lp85253]

You can put it on the existing fish tank...it'll even be faster if you mix some biological material from the old filter in the new filter.

+1thats the best way i know to cycle a filter

 

[EdPo21]

Thank you for the help. That's what I figured but I've never done it before and wasn't sure.


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