Those are all bio-media, including the ceramic rings. In my cannister I have 3 baskets. The first basket that the water goes through, has a sponge, the second had filter floss, and the third has ceramic rings. I was always taught to use the bio-media last to keep the sludge out of it.Hi All,
It would be great if someone could share experiences about filter media like:
1) Seachem Matrix
2) Eheim Substrate Pro
3) Bio Rio
Also, what is the order of filter media.
I have some ceramic rings, but should I place them at the bottom ?