<h2>Deep Blue Professional - SolarMaxPC 64W 50&#047;50 Combo Power Compact &#040;4&#045;Pin Square&#041;</h2><p>50&#047;50 Combo lamps combine the power of DB&#039;s 10KK daylight & actinic&#045;03&#046; Triphosphor fluorescent for excellent color rendition on daylight tube & 100&#037; blue phosphor that peaks at 420nm actinic tube&#046;</p><p>Powerful, 10,000 Kelvin Daylight & Actinic&#045;03 PC fluorescent lamps ideal for both freshwater and marine aquaria&#046; Provides light vital to healthy growth of photosynthetic corals&#046;</p><p>Simulates the blue hue of deep water & tropical daylight for all purpose illumination</p><p>Universally sized and compatible with most PC lamp systems</p><p>Low profile, space saving design&#046; Use with electronic ballasts for efficiency and extended service life</p><ul></ul>