I have recently bought my 200l tank and bought a used fluval 305 with media. The filter was used in a tropical tank previously.
I filled the tank with water yesterday and started the filter up.
I have new media for the filter but wanted to run it with the current media to assist with bacteria and cycling.
My question is, should I, at some point during cycling replace all of the media in the filter? I have no idea (trying to find out) how long the current media has been used for.
Also, was hoping to add live plants to the aquarium, is there a good point during cycling yo do this?