Instant cycling?

[E-cubed]

Please forgive a question. I think I know, but I have to ask.

I am setting up a very small tank as a quarantine tank for 4 new fish I want. I have taken the well used filter out of my Betta tank and placed it in the new set-up. Can I assume the tank is "instantly cycled" and will be OK to place a few fish in next week? (The new tank has a couple of pieces of wood covered with moss in it, and black onyx sand.)

 

[roka64]

I would add a pinch of food and test in about 3-4 days and test for ammonia. If you see ammonia, then you need to cycle.
Props for the QT!!!!

 

[Purrbox]

The biofilter needs to have an ammonia source or after a few days it will start dying off and result in needing to recycle the aquarium.

 

[E-cubed]

Thanks for the advice.

Perhaps I will put in a feeder Zebra Danio or two.

 

[bazil323]

Yeah, it would be instantly cycled and you should put a fish in there immediately.

 

[E-cubed]

Yeah, it would be instantly cycled and you should put a fish in there immediately.

And I have added a few fish just moments ago. Thanks for your advice!

 

[mike47517]

good luck.