sand or crushed coral and depth?

Hello everyone



just acouple of things I need to ask.....



1.... whats best crushed coral or sand? And what depth

2.... will my tank benfit from a uv lamp...

3.... iv had to move my tank into another room due to the room been

Decoraterd... how long should I leave it till I put it back... took me

over six hours to move it....



Cheers