Sensory Room Bubble Tube Essentials SetLearning SPACE highly recommend the use of the following products with all its bubble tubes. This will extend the life of your bubble tube greatly.Includes: BCB Liquid - The regular use of BCB Liquid helps minimise the build-up of bacteria and algae in the water of the bubble tube. Pump - Perfect for removing water from bubble tubes for cleaning or transport. You drop the grey pump down into the bubble tube (after removing the bubble tube top cap) plug the pump wire into the power supply put the end of the pipe into a bucket or sink and switch on. The pump will pump out the water into the bucket.