Sprout? Lotuses when they start growing will send up floating pads first. These pads are usually only about the size of a half dollar at first but will grow larger. After a while, aerial pads will start growing. Sometimes the first small floating pads will die, but more pads will come up if the plant is not disturbed. I suggest just leaving the plant alone and see if additional pads will show over the next week or two. Make sure it is getting plenty of sunlight.