Does anyone run an external skimmer? What are the pros / cons versus internal? Any pointers?
I have a 58 gallon sump on my 180 gallon tank and due to its height and height of stand, I'm limited on the diameter skimmer body I can fit. I'm leaning towards a MSX250 right now due to cost / performance, but I'm not sure I can get it to fit in the sump. As a result, I've kicked around the idea of using an external skimmer and then converting the sump to a refugium.
What do you think? Any negatives about an external skimmer?