Using these flower vases is a breeze. First, decide on the arrangement you like. You can use the 16 connectors to assemble the 8 tubes in different ways. Fill the tubes with water and then place your fresh flowers inside. For the best results, change the water every two days to keep your flowers looking fresh. When cleaning, use a mild soap and warm water. Avoid using abrasive cleaners as they can scratch the glass and acrylic. Keep the vases away from direct sunlight and extreme temperatures to prevent any damage. If you're not using the vases, store them in the gift box to keep them safe and dust - free.