Can I use cycled filter media for instant fish in a new tank?

Question

I have a small new 15 gallons tank. Can I add water and filter from my already cycled tank in the new tank for me to be able to add fish instantly?

Andrea M. Brodie, DVM · Accepted Answer

Actually this is a good idea! I would however, make sure that the water temperature is the same as in the already running tank, so the good bacteria in the filter do not die. But , yes you can definitely do this without having to wait.

Can I use cycled filter media for instant fish in a new tank?

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