I have a very large red tip enomone that when I moved everything from my 65 gallon to my new 100 that it moved underneath a cave rock. Now it is missing. I have looked all over my tank and can not find it. Do I need to take all my rock out? I did get a flash light and look into the cave. The water paramiters are good. Do they go under the sand? I gues I ought to almost empty the tank and seriously look for it. But that is alot of work. Do they just appear again? Thanks for any help.