Moving tank to tank-How to?

[Hiab422]

I moved a 90 gallon from the old to the new in 1 day but was lucky the new tank was going up on the wall next to the old one so it was bucket the rock catch the fish put into holding tank pump water from one tank to the next.Then moved the sand from old to new let that all settle put rock back in corals then fish no problems at all.