The ceramic rings are supposed to be better for biological filtration because they are porous - which increases the surface area. This seems fishy to me. Those pores will clog very easily, removing their extra surface area. And even if they did not clog, there would be very little water flowing through the pores, so they would not make an ideal surface for bacteria.
I'm thinking that these ceramic rings are no better for bio-filtration than good old sponges. And sponges will add more mechanical filtration and cost a lot less.
What does everyone else think?
I'm thinking that these ceramic rings are no better for bio-filtration than good old sponges. And sponges will add more mechanical filtration and cost a lot less.
What does everyone else think?