Floating Flower Centerpieces

I have 12 tables at my wedding flowers with deep centers cylindrical. 3 cylinders on each table. No particular color.

You must attach the flowers to a weight to keep them at the bottom. A flower with a strong stem, which can be connected to a weight of floral wire should work.

Most things I've seen floating candle is a small clear plastic disc with a wick. Vegetable oil is floating on the water and the wick is lit and will burn until the oil is past.

My mother did some tracks such center in the 50s.