Lol, moving a 30g tank is hardly a challenge. Be glad you don't have anything over 100g.
Not to contradict anyone that's already responded but you certainly don't need to keep the substrate, decorations, or any of the tank water. BB does reside in your substrate but certainly not enough to ever start an instant cycle in a tank. If you ever wanted to change your substrate out now is a great opportunity. All you need to worry about maintaining is the bio media in whatever filtration you are running. It will cause an "insta cycle" in your new tank and you won't need to wait before adding the fish right into the tank. Just make sure the media stayed submerged in conditioned water. Just throw it in the tote with the fish.
As far as moving the fish that'll be super easy. Go buy a 30g tote from dollar general or home depot. Fill it with same temp water (obviously you need to condition the new water with prime or something similar so it doesn't nuke your bb on your media or harm your fish) and float some fake plants on the top for cover for the fish. You can add a bubbler with an air stone in there or some bag buddies for oxygen and lid it and move it. If it's 15 minutes you should have 0 issues. Realistically you don't even need the aeration or bag buddies for a 15 minute drive, though it can't hurt.
Not to contradict anyone that's already responded but you certainly don't need to keep the substrate, decorations, or any of the tank water. BB does reside in your substrate but certainly not enough to ever start an instant cycle in a tank. If you ever wanted to change your substrate out now is a great opportunity. All you need to worry about maintaining is the bio media in whatever filtration you are running. It will cause an "insta cycle" in your new tank and you won't need to wait before adding the fish right into the tank. Just make sure the media stayed submerged in conditioned water. Just throw it in the tote with the fish.
As far as moving the fish that'll be super easy. Go buy a 30g tote from dollar general or home depot. Fill it with same temp water (obviously you need to condition the new water with prime or something similar so it doesn't nuke your bb on your media or harm your fish) and float some fake plants on the top for cover for the fish. You can add a bubbler with an air stone in there or some bag buddies for oxygen and lid it and move it. If it's 15 minutes you should have 0 issues. Realistically you don't even need the aeration or bag buddies for a 15 minute drive, though it can't hurt.