Hi, I've decided to go BB and have search and read posts on BB tanks. However, is it practical to have a BB tank, but a DSB refugium (marco algae only)? From what I know, fish poo that settles down on a sandbed would remain uncleared, which will contribute to phospate and nitrate levels.
However, if poo and dirt is filtered by the filter wool, then is it alright to have a DSB in my refugium with strictly only marco algae inside? What do you think?