Get some REALLY beefy guys (On roids obviously) and move it . On a more serious note...is it even possible to move a tank that large with water in it without cracking the glass?
What i did when i moved my 300l (not sure what it is in gallons about 80 i think)is emptied all the water into the bathtub and put all the fish and plants in there as well,of course i gave it a very thorough clean and rinse first to make sure there were no chemical residues in it.This worked a treat and saved me a fortune in having to condition new water and the fish seemed happy with it too especially the Balas which seemed to think the sloping end was a take off ramp