Colours can be changed using the control The speed of the bubbles is also adjustable on an interactive tube.Our bubble tubes are an eye catching, calming and engaging must have in any sensory room or environment.The bubbles are created by air from a pump which is powered by a low voltage power supply, all cleverly hidden inside the base of the bubble tube. Long lasting colour changing LED bulbs provide the light and colour to the tubes, adding to the calming effect of the bubbles. The tubes are designed to be easy to fill and drain.All our tubes are based on high brightness, low maintenance LEDs. Pumps are designed to operate 24 hours a day, 7 days a week so that they can be used in any environment.There are 4 standard sizes to choose from: 1 m / 1.5 m / 1.75 m / 2 mOur standard tubes are 15cm in diameter but we can offer 20cm diameter tubes. Please contact us for a quote.All the bubble tubes are made in Britain and are designed to be in use 24 hours a day, 7 days a week.