hi. others might be able to help better as im only new to the whole marine fish scene myself. However the tank i got was 2nd hand with water and fish and rock in it so i can fill you in with what i did i didnt lose any fish
How big is the tank? How far are you moving it? Just asking how far as if its a fair trip you will need some kind of air stone or something in with the fish.
Equipment i used.
I bought a few 60 litre garbage bins.
Tape (to seal lids tight so not water splash's out.
Stress guard. ( drops to put in with fish to keep there stress levels down)
1st of all you want to take as much water as possible with you.
I took all of it except a tiny bit in the bottom.
depending on what you are doing with your live rock u can either wrap it in wet newspaper and ship that way but i put mine in water. better if u can do this depending again on how far.
Syphon some water into a bin Take out live rock and put into bin.
use a couple if you have to
Syphon more water out into another bin.
Put stress drops in the bin for the fish as indicated on the bottle.
Catch fish and put them in that bin (put air stone in if you have to)
syphon the rest of the water out into remaining bins.
Main thing is have heaps of help. took me ages.
seal the bins with the water only and the live rock in it. i left the lid of hte bin with the fish in it open for more oxygen
Important thing is to PLAN and MOVE QUICK.
i dunno if this can help you at all but i got mine up alright now
good luck. its not easy.