I don't know what bio max is, so cant help ya there.
I just set up a nuvo 40, only added purigen & carbon (or chemipure) when i added my first fish.
Here is my media basket setup,
(after the tank cycled).
Right: Top-bottom: floss, purigen, carbon.
Left: i cut the basket & only run some floss as I have my probes in that chamber below the "mini" basket.
I do run gfo
in a reactor as I don't think chaeto does much in such a small amount, My opinion.
(Only because my dry rock leaching a bit of phos).
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