I haven't had much luck with the LFS in my area and the local club (Rockford Reefers) has been a disappointment as well so I found a guy in the yellow pages that seems to be a good source of information. He actually runs a business that supplies offices and homes with saltwater tanks and maintains them. Says he has been doing this for 20+ years. I went to his home/business and liked what I saw. I wanted to get information about adding zoanthids and clams to my tank but he cautioned me about my filtration and lighting. He recommends upgrading my 55 gal tank to this: \n \nCPR Refugium W/skimmer\n Small - 19 1/4 " x 3 3/4" x 14 5/8" - 0.00\n Large - 23 1/2" x 3 3/4" x 14 5/8" - 0.00\n \nAnyone have experience with this unit? Should I get the small or large? Are his prices ok? Anyone have a different recommendation? \n \nI am new to the hobby and don't have a clue!