Okay…
You need tubs, for fish, coral and rock…keep everything separate.
Have EVERYTHING ready before you start.
The plan is to do this within hours. First remove your lights, heaters and filter stuff…keep everything..pads everything
Next remove the rock and put it in tubs, no water just drape newspaper over everything to keep it moist. By keeping your filter stuff and not replacing anything like pads your good bacteria should be enough to keep any small die off ammonia from the rock to a minimal.
Next remove coral if you have them and put them in a separate tub, add a power head and a mesh bag of carbon, because the corals are really stressed and will emit toxins to fight. Now this leaves your tank empty enough to catch your fish and place them in tubs, only fill tubs half way for fish and coral so it will not be too much splashing…cover the fish to prevent jumping.. but not until you are ready to move, use a power head to move the water for them, till the last moment.
Scoop out your sand and put in buckets, sand is very heavy, I only filled my buckets to 1/3[sup]rd[/sup] , there is no need to add water the sand will stay wet enough. DO NOT leave any sand in the tank to move it. Sand is too heavy and if a seal breaks your critters have nowhere to go. Better safe than sorry so don’t chance it.
Grab the stand and tank and go. First add the rock, then the sand around it, refill the tank and wait for it to settle. Keep your fish with a power head and check for stress, do an ammonia test and be ready for a quick emergency water change if need be. Don’t add any power heads at this time to the tank because it will keep the sand blowing all over.
Once the sand is settled hook up the filters, and everything except what the corals and fish need. Re-acclimate your corals and fish to the new tank setup. I would leave the lights off for the day to let everything settle down, the fish will hide and not eat and expect the corals to close up and be very stressed. Delicate inverts like shrimp or sea stars will have the hardest time in the move, so re-acclimate them really slow.
I think that covers everything, if you think of a problem just post it and we will tweak things if needed. Don’t do your move until you are very comfortable with the moving plan. If you can think of a potential problem it’s good to iron it out ahead of time.