My wife bought these about a week(6 days) ago and they still haven't opened I have moved them all over the tank. Put them in the darkest spot I made a cave for them I have tried to feed them everyday. I'm kinda lost on what to do to get them to come out. I have fed marine snow, zooplex, brine, and mysis shrimp. My water is testing good I have no other problems with anything else. Any ideas on what to do?