I think it is a pest, I have done before FW dips, and the other dip I have seachem coral dip, should i do one or how to I remove this?
http://i1072.photobucket.com/albums/w376/raullozano3/whatisthis.jpg
http://i1072.photobucket.com/albums/w376/raullozano3/whatisthis.jpg