I'm in the larger water bowl camp. If my humidity isn't where it should be I just add either a larger bowl or an extra smaller bowl. You can also add an extra bowl of very wet coco husk or something like that. That will bump humidity and is resistant to mold. You can also put some damp moss in their hide. I don't do this but lots of others here do with good success. I would only soak if there was a stuck shed issue.