Hello all, I am new to thiss forum. I have had SW tanks on and off for 15 years now but none for the last 4 years. I was one who always used a wet dry filter, now I am thinking of using a refugium. I have a few questions for you refugium experts out there. Do you guys also run prefilters and carbon (or other medium) or do you just run the refugium as is. If that is the case what polishes the water and what removes the "junk" prior to getting to the refugium and making it settle in the bottom of the refugium. Do you all like this setup over the wet dry?