AC110 as refugium

[mrhasan]

So I will be making a HOB refugium out of AC110. I am thinking of making most of it with just chaeto but with a baffle, I will be adding activated carbon + my heater + foam/filter floss.

So I am confused whether to put foam/filter floss. Suggestions please

And for the activated carbon, it there any preferred brand that lasts longer or I can just get mariland ones?