i have a 6 gallon nano for now. (my 55g build is coming up soon so i will be looking for some insight on that.) i have a false percula clown and a red scooter blenny some hermit and emerald crabs a bumble bee snail (that i almost never see) <(I had a camel back shrimp)> i have some zoas two pieces of xenia, star polyps, and a tooth coral. for awhile my xenias were dying and i could figure out why my water param were perfect tested them at home and the lfs. perfect! now i should say that my tank is a fluval edge 6 gallon. i have about 10 lbs of live sand and about 7 lbs of live rock. the tank has been cycled for about 6 months. long story short i caught the camel back shrimp going all edward scissorhands on one of my xenias' when i came home for lunch. i don't know how many of yall know what a fluval edge looks like but i caught that shrimp with a not so small net (very lucky i will tell you; didn't really upset the tank doing it) and immediately took him back to the fish store. i like these guys at my lfs they gave me a store credit for exactly what i paid for him. cool!!! anyway, they (xenia) have comeback to life and have almost completely recovered in very short order. man these things grow fast. just wanted to let yall know about my experience with a camel back shrimp so that maybe it might help someone else. ;D the best part about this whole thing and what maid me post this thread. today the xenias started to pulse shortly after i did a water change. i can't wait to start my 55g build. i am going to go with a sump and will be building it myself so i'm sure that there will plenty of advice to go around. i am converting this tank from fresh water and have already sold my freshies back to the lfs. did i say these guys are awesome? tank is cleaned up and back glass is painted. plan on getting it started this weekend with some live sand(50lbs) ,and a cup of sand from the lfs. gonna throw a little damsel in there to help it cycle. i am almost done here can you tell i'm excited to get started. anyway, i do have a question about live rock ,and where should i buy. i have had alot of bad hitchhikers that came with the lr in my nano. i have considered using saltwaterfish.com and going with the fiji live rock. i was wondering if anyone else has had any experience with their rock or dealing with them in general. thanks everyone for your comments and advice in advance.