Thank you for your kind remarks. RI is not that contagious, and you can probably put him back with others after a week or so of treatment as long as he can compete for food. I have never had more than one spottie at a time (except when I was kid, many years ago and collected about 8 for a huge outdoor set up (note: The first year I collected a bunch of them, I released them back to their habitat in the fall). I have never bred them. I am currently cutting back on my collection to about 73 turtles (all species), but many have been in my care for about 20 years or more.