Replacement t5 light unit for juwel aquariums free 24 hour delivery is available for this productr this unit comes with 2 x free daylight bulbs which are already fittedr for marine aquariums the marine and blue bulbs will need to be purchased seperatelyr r r an instructional cd is includedr the most common issue with these light units comes from when aquarist do not replace the lighting end caps when they replace the bulbsr replacing end caps are a must to ensure the unit remains water proof