Another Newb question!

[rcboatman59]

Hi all!
I have a 150 gallon cold freshwater tank with native fish (Crappie, Sunfish, Bluegill...)
I have a Fluval G6 filtration system.
My question is which type of cartridges do i use with it?
There are a few different types but none explain what they are for
Thanks

[ZxC]

If you want factory fitment I would run a lot of mechanical and biological media. Those phish are messy messy.

Fluval G-Series - The next generation in aquatic filters