A PL11w compact fluorescent tube offering half sunlight and half marine blue light. Ideal for marine use or if you fancy an under the sea look for your tropical set up. These 11w tubes fit many of Aqua One’s smaller set ups such as the Aqua Start 320 and 320T, Aqua Style 380, Aquastyle 510, UFO 350, UFO 550 and AquaMode 600. When changing any PL tube take your time and only ever grip the plastic base of the tube. They can become quite stiff to remove so take it slowly and gently wiggling the tube from side to side until it pops out. Make sure the new one is pushed firmly into place.