Easy to install Multi Colour rainbow LED light, creates interesting and varied lighting effects. Creates stunning ripple effects, the Multi Colour LEDs are a spot light source which bounces off any surface water movement to create a ripple effect in the aquarium. Cycles through a rainbow of colours that phase into one-another over a 30 second period. Use the inline control button to stop the light at your chosen colour at any point in the cycle. Safe, reliable and fully submersible.