I am sure you will have some kind of spike. You disturbed your Rock and sandbed. Some of your bacteria in your sand was most likely smothered while dumping it into the new tank. Im sure it will not be big or long but just moniter for about a week. If nothing serious you can slowly add fish.
125g~Zoanthid dominated~SPS~LPS~T. crocea~S. haddoni~2xSaddleback Clowns~Hippo, Kole, Achilles Tang~Leopard Wrasse~Flame Angel~Purple Firefish~Gobies~Chromis~3xCleaner Shrimp~2xHarlequin Shrimp~Pistol Shrimp