Best thing to do is to move the water/LR
and fish into a rubbermaid tube with a heater and powerhead while you do the move. In the meantime, make sure you have plenty of aged SW
that is the same temp and Ph of the tank water. Move your substrate over to the new tank and disgard the mucky water left in the bottom of the old tank. You will also need to add some additional substrate as the foot print of the new tank is likely larger. Put some of the new SW
in the tank, put in the LR
are you wish, add the livestock and the remaining water until full. Switching tanks is a PITB, but with proper planning it it is not too bad. Good luck!