i am extremely intrested in either a tiger tail or pink cucumber, but no absolutely nothing about them. i'm in the process of converting my 55 fo to a reef. i have a 20 gallon sump with a excaliber skimmer in the sump. the tank has been up and running for nearly 9 months. i was wondering what else i would need to consider, or even if i can consider one of these guys at all. oh yeah, my bio-load in a firefish, skunk clown, 6-line wrasse, and i was also thinking of a green mandarin down the road in a few months. i also have a cleaner shrimp and few snails and 1 or 2 red legged hermits. i always recieve great input from this forum, and i'm looking forward to learning more. just let me know if you need any more information of any kind.