What about sustrate? live rock? Has all been transfered to 55? If you put uncured live rock or substrate in with cycled water, the cycling process will be faster but still take place. Do your water checks and you can determine when everything is all right. If all of these items were transferred to the 55, then, to be on the safe side, you could slowly start puting fish in the tank in about a week. Again do the water checks. Good luck!Good luck.