Do you still have to cycle if adding all the water from other, established tank?

[VioletThePurple]

My other tank could fill up my new small tank, would it still need cycling?

 

[Valkyrie_Lips]

Yes, the water doesn't hold any beneficial bacteria. BB lives on filter media and surfaces in the tank, including the substrate.

 

[Slaphppy7]

Yes, the water doesn't hold any beneficial bacteria. BB lives on filter media and surfaces in the tank, including the substrate.

As was mentioned in your other thread...

 

[Valkyrie_Lips]

As was mentioned in your other thread...

I didn't see it.. OP shouldn't be opening multiple threads for the same question then.