Instant Cycle

[geezer]

I'm getting a hosptial tank on Monday, and really want to move a fish who's being bullied.

I've kept gravel in bin bags for about a 9 days - if I put it in the new tank will the good bacteria have gone?

Also, if I use a filter (spounge) from my 55 gallon (established tank)

Will any of them two make it instantly cycle?

 

[jayjay]

the sponge filter will cycle the tank, the gravel won't.

 

[Torrean]

filter will work...gravel will not because the bacteria have probably died from drying out and lack of food. The filter will not instantly cycle the tank unless it's used to the same or greater bioload of the tank you are cycling