Last week, I basically swapped the contents of my 5 and 10 gallons. That included catching and transferring my dozen or so RCS, including babies. I emptied the whole tank besides gravel, and caught as many as I could, and swapped them. I then took all the water out, turned over the gravel (had some algae) and added some more. I refilled, and added the new fish.
Just now, a week later, I saw a teeney baby RCS!
I'm totally amazed that he survived, and also managed to stay away from the dwarf puffer, who has eaten every snail I had in there, even the bigger ones. Doing WCs tomorrow anyway, gonna see if I can catch him.
Just now, a week later, I saw a teeney baby RCS!