saltwaterfish.com is a good message board you might want to check out too.
what size is the tank? on my 75g i had a 20g long that fit inside the stand under it. worked out great. too bad you already have the wet/dry, a fuge is cheeper to build than buying that filter.
the 75g
http://i25.photobucket.com/albums/c80/CamaroAJ/fish1002.jpg
http://i25.photobucket.com/albums/c80/CamaroAJ/fish1001.jpg