I used matrix (ceramic bio media that is similar) in my QT and tested my copper levels almost daily. I never saw a dip in the copper levels as long as I dosed the water change water correctly. For what that's worth.
Nice. anyone else had experience? On the seachem web q and a they say ceramic does absorb or hold medication but stays soluble which means that can be taken out with carbon later on. But not sure if i should use it. They seem awesome.
I used them and love them. I have 5 blocks sitting in a 125g qt with no other filtration and two fat crosshatch triggers that messy eat and poop like no tomorrow. No water changes in 6 months. Crystal clear water. And nitrates below 20.