The water will make little differenc, accept it will be the exact same water the fish came out of, thereby lessening stress, but the bacteria colonize porous surfaces, there will be some freefloating in the water, but not enough to make a difference. If you move the
LS over and the CC, throw in a piece of table shrimp and wait for a week, test and if there is no ammonia or nitrite, I'd say it was safe to
slowly move the fish over (maybe do a 50% water change on the small tank, using the water to help fill the larger aquarium) I wouldn't move more than 1 fish per 2 days. Keeping a close eye on the ammonia and nitrite, be ready to move the fish back to the smaller aquarium if it begins to rise......