I had some recent financial setbacks but I am finally up to the point I was at when I first joined the site, that is, 1 paycheck away from purchasing my light fixture for my 26-gallon bowfront. I am looking to use a 30-gallon tank for a refugium/sump. I know that I don't really need a refugium but the tank is just sitting around and I would like to get experience building and maintaining a sump outside of my work. I would like to combine a wet-dry filter with refugium. I was wondering if people could give me some ideas on a design and what stock I should put in the refugium. All help is greatly appreciated.