The following is the recommended amount of ice cubes you should use to water your poinsettias.
4 1/2" --- 2 - 3 Ice Cubes
6 1/2" --- 4 - 5 Ice Cubes
7 1/2" --- 6 - 7 Ice Cubes
8 1/2" --- 8 - 9 Ice Cubes
10 1/2" --- 8 - 9 Ice Cubes
remember, take time to pray