Dymax Compact PL 55W Tropical Aqua replacement bulb is designed to enhance the red colour of fish, with a spectrum range of 380-450nm. It produces a slightly red coloured spectrum that is ideal for any fish with a red colour. It has a wide operating voltage range. It is designed to have high luminous, with high performance while having innovative energy saving efficiency. Luminous flux: 1650Lm (55W x 30Lm/W).