Agreed on the filter socks. I don’t use them because they’re too much maintenance.
test your NO4 and PO4. A new tank, Idon’t think it’s very high.
I love the idea of refugium for biological filtration and skimmer for mechanical filtration. It just sounds so right. However, in my years of reefing, I’ve never successfully kept chaeto alive for longer than 3 months. It always crumble and disappear.
I always have a refugium though. Like I said, it just sounds so right. So I do it.