This kit enables you to grow a realistic looking coral structure using a special crystal method. All it takes is 3 simple steps, first you place the base rock in the middle of the growing tray, then add the magic water directly on the base rock, and lastly wait one night and see the magic before your eyes! Simple, easy and lots of fun. Grow you own magical coral reef rock! Bring the beauty of the ocean into your home with this DIY coral crystal! Collect lots of colours to create a vibrant coral reef! Coral will start to form within 2 hours and be fully grown in 10-15 hours Kit includes a growing tray, base rock and a magic water satchet