Hey guys. This is my first post so bare with me.
I am a beginner so I will probably be asking a few questions

I've recently upgraded from a 60L tank to a 110L so fa everything is going ok. All the equipment is new including filter and heater.

So to my question;
Because I've bought a new external filter I'm currently running my pl internal filter alongside it to try and get the bacteria to build up in the new one.
The new tank has been set up for a week this way and seems fine.
How long shall I leave the internal filter running in the tank before removing it?

Thank you

-Rocksta