Radium 400 Watt 20,000K bulb 400 Watt Double Ended MH Bulbs - Full spectrum

- Full spectrum

Ideal Choice for Marine and Reef Aquariums

- Simulates sunlight at ocean depths of 5- 18 Ft

Suggested Metal Halide Wattage Guide: 175w for tank depth of 24" - 48"

- Includes wires- Brand New and Unused- Each pair can be used for one 250 Watt and 400 Watt DE HQI lamp

Radium 400 Watt 20,000K bulb 400 Watt Double Ended MH Bulbs - Full spectrumRADIUM Metal Halide 400W 20000K Bulb German made 400 watt lamp by Radium Deep blue appearance Brings out fluorescence in fish and corals Provides the aquarium with an attractive, actinic look Must be used with a 400 watt M135 ballast or 400 watt electronic ballast cannot be used with a probe start M59 ballast. Please check your ballast type before ordering. Fast, Free Shipping in the USA