[jtbadco]

here is how i did my transfer from a 65 gal to a 120.

First I drain and stored as much tank water as possible.

Then I removed all the corals and LR.

Then I removed all the fish and critters, transport in stored water

I then siphoned the sand out.

I did not transfer the old sand to the new tank. I got new sand. If you have the ability you can rinse off the old sand and reuse.

I set the LR and corals back up in the new location and added the old water, topping up the tank with fresh SW, tested param's, then added the fish.

I then added the new sand, 1 litre at a time, lowering it in jugs to the bottom of the tank and pouring it out.

Then restart your filters, skimmers, etc and voila.