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Dunk2 said:Bio balls
https://www.seachem.com/matrix.phpDo I need to put the Seachem matrix in a small nylon bag?
In my opinion, I’d suggest you not use the bio balls. Instead, use the ceramic rings, Seachem matrix or both. As I said, the rings and Matrix do the same thing, I simply think that Matrix is better.
All that said, don’t stop using your current rings if your tank is cycled. Just add to them.