sounds like you need to google hermit crab care (forums are wonderful, but research is best!) lol. And pics would be nice as well (hint hint)Ya, theyre really weak, but they seem to be happy. Pretty active. They keep gulping up sand and spitting it out, like cichlids do. They seem to like to look at things outside the glass.
I don't think these are feeders, but they might have used to be. They are nice sized,maybe 2 inches, not including the tail.
Also, would the hermit need an actuall pool of water to bath in? Or could he just have water to stay wet? He's very active.