Professional Series. 180 degree Reflective Lamp 100% Blue spectrum, peaks at 420nm Best used for reef applications Blue chlorophyll absorption utilized in natural photosynthesis True 420nm T5 (Super Actinic). Utilizes a proprietary blend of unique phosphors exclusive only to UVL (URI). Dual coated phosphor and long mounted filaments to achieve long life. No color shift. Useful life: 4500 hours A coating of silver oxide on half cylinder of tube. These new reflector lamps are estimated to produce 20% more PAR than non-Internal Reflector lamps of the same type
