I have lots of questions
Im needing a filter for my cold tank as im getting so many fish in it now.
I have checked out the Aqua one website and they have the internal ones with 500L/hr and 1200L/hr, which one whould be best for a 150L tank?
Also how do i go about adding it to my tank, do i have to run it in a seperate tank first or straight into my tank?
Also im gonna have to put a heater in during the winter for my guppies, danios and bristlenose, it would probably be set at 20 degrees, would the goldfish cope with it ok?
TIA