Jello has been just tolerating her 240gal tank, it seemed to me - appetite on and off, moody, taking uncomfortable positions, because she is much longer by 6" or so than the tank's width and the tank's height, unable to assume a totally vertical position when begging under a lid. Plus we needed the tank space. So decided to give her a try in the less aggressive 4500 gal, where she had never been (she did spend a few years in the other 4500gal with the jumbos, some of whom were bothering Jello, hence the move year ago to the 240 gal to stop risking her life and health).
Also, she has had this fuzzy spot on her tail for like a year it seems. I had removed it physically but it comes back. This time I decided to dab it with concentrated potassium permanganate.