Carageenan is a natural seaweed gelling agent that provides a viscous surface for marbling on fabric and paper. Basic proportions are 2 tablespoons Carrageenan to 1 gallon of water. In a blender, mix 1 TBS of Carrageenan into approximately 3 cups of warm tap water for 60 seconds. Pour mixture into a bucket and repeat the process with second tablespoon of Carrageenan. Pour second mixture into the bucket with the first mixture. Then, add enough water to make a total of 1 gallon and stir. For larger quantities repeat procedure using same proportions. Fill marbling tray to about 1.5" deep and allow to rest for 12 hours.