Starting New?

[catj]

All my fish died, There is a fish that brought in some kind of disease and killed off all my fish I have some coral frags 2 snails and 4 hermit crabs. I was thinking of restarting the tank, move the living things into a small tank draining the main tank and redoing it, but if I do this do I need to let the rocks and sand dry out or what do I do?

I know that once it is set back up i will keep that extra tank as the holding tank so this won't happen again but dose anyone have any advice for a restart?
Thank you

 

[sfin52]

Do you know what got into the tank?

 

[catj]

No I do not, but they where acting normal but you can see their costs flake or look as if they wrinkled up?