I use the Marineland Power Filter 200 and currently use the Marineland Filter Cartridges. I just bought some media bags and some Seachem Matrix bio media. I will start using that this weekend.
I eventually want to quit using the filter cartridges and switch to just a filter piece to catch the bad stuff before it hits the bio wheel, but what kind of material should I be looking for? Should it be coarse or fine?
I can order on amazon or see what the LFS
has, I just do not always trust the opinion of the owners nieces and nephews, as why I am asking you bunch.
If you recommend me to just continue to use the cartridges, just please let me know why.
This is on a 20g tall tropical tank btw.
Thank you in advance,