I got a few starter hardy frags from Tuberider at the dec meeting. One is a pretty stag with blue tips, its not happy. The tip seemed to of lost its color but wasnt too worried as thought maybe stress as it was really cold when it was brought home. Today it seems to have lost a little bit of Tissue at the base and underneath its hot pink. Good news is the tip has colored up again. So now here is my question what is the difference between bleaching, rtn, tissue sluffing off, there is alot of sps terminolgy read and sometimes I understand but sometimes im not really confident in what im trying to describe as my problem with my coral.