Hi
In my 120l tank i am currently running a Fluval U4 internal filter which i would like to change to a cannister external type.
Am i better off leaving the old filter in for a while after fitting the new one or removing the old one and just putting the media in the new one.
Cheers Folks
Sean
In my 120l tank i am currently running a Fluval U4 internal filter which i would like to change to a cannister external type.
Am i better off leaving the old filter in for a while after fitting the new one or removing the old one and just putting the media in the new one.
Cheers Folks
Sean
