The Hi-Tech Lamps part number UHI70AQ10 is a 75 watt (75W) metal halide aquarium lamp with a color temperature of 10000 Kelvin (10000K). This 10,000K lamp has a high color temperature from a single point source which simulates the appearance of sunlight near the equator in ocean depths of approximately 5 meters. This Ushio metal halide lamp has two recessed single contact (Rx7s) bases. Ushio recommends replacement at 6000 hours operation. This lamp is also known as Ushio UHI-70AQ/10 and 5000870.