Who is Using a Refugium for Nutrient Control?

[chandigz]

I have been running a skimmerless, mineral mud type sump/refugium on my 72 for 2 years now. I grow several types of caulerpa and chaeto on 24 hour lighting. I don't do a lot of water changes and still have undetectable nitrate and phosphate levels. Seems to work for me. I may eventually add a skimmer to create a hybred system, but everything is going good so I'm not sure if I want to change.